Atoms, elements, and reactions
Students start with what everything is made of. They learn how the periodic table predicts how elements behave, how atoms rearrange in a chemical reaction, and why the total amount of matter stays the same.
This is the stretch where science stops being a tour and starts asking students to build a case. Across chemistry, physics, biology, and earth science, students use data, math, and models to explain why things happen, from how a chemical reaction speeds up to how DNA shapes a protein to how the climate shifts over time. They design and test devices, weigh trade-offs, and argue from evidence. By spring, students can read a science claim in the news and judge whether the data behind it actually holds up.
Students start with what everything is made of. They learn how the periodic table predicts how elements behave, how atoms rearrange in a chemical reaction, and why the total amount of matter stays the same.
Students study how pushes and pulls change motion and how energy moves from one form to another. They use math to predict what happens in a collision and design devices that soften the impact.
Students look at how sound, light, and other waves carry information and energy. They investigate how electric currents and magnets are connected, and weigh claims about radiation from sources like phones and the sun.
Students turn to living things. They trace how DNA tells cells what to build, how cells divide and specialize into tissues and organs, and how traits get passed from parents to children.
Students follow energy and matter through food webs and study how populations grow, shrink, and change over time. They examine the evidence for evolution and how species adapt or disappear as conditions shift.
Students zoom out to the planet and the universe. They study how stars form elements, how plate tectonics and water shape the land, how carbon cycles through air and oceans, and how human choices about resources affect the climate.
Students use the periodic table to predict how an element will behave, based on where it sits in the table. Elements in the same column share similar properties because their atoms have the same number of electrons on the outside.
Students learn why certain atoms bond together by looking at how electrons are arranged on the outside of each atom. They use patterns from the periodic table to predict what new substance a chemical reaction will produce, then revise that explanation when new evidence shows up.
Changing the temperature or concentration of chemicals speeds up or slows down a reaction. Students explain why using real evidence, such as why food spoils faster at room temperature than in the fridge.
Students use math to show that no atoms are created or destroyed in a chemical reaction. The number of each type of atom on one side of a chemical equation has to match the other side exactly.
Students look at motion data to show that a bigger push or pull causes a bigger change in speed or direction. This is Newton's second law: more force on an object means more acceleration.
Students use math to show that when two objects collide or push off each other, their combined momentum stays the same, as long as nothing outside the system is pushing or pulling on them.
Students design and test something that cushions a collision, like padding inside a helmet or a bumper on a car. The goal is to reduce the force felt by the object when it hits something.
Students run hands-on experiments to show that running electricity through a wire creates a magnetic field, and that moving a magnet near a wire can push electricity through it. These two ideas are the foundation of motors and generators.
Students build a simple computer model that tracks energy moving between parts of a system. When they know how much energy flows in, out, or into other parts, they calculate what's left for the remaining part.
Energy can be stored in moving particles (like heated gas molecules speeding up) or in invisible fields (like the pull between magnets). Students model both to explain where energy goes when it seems to disappear.
Students design and build a real device that converts one form of energy into another, like turning motion into electricity or heat into light, then improve it based on how well it actually works.
Students mix two substances at different temperatures and track how heat moves between them until both reach the same temperature. The experiment shows that heat always flows from warmer to cooler, never the other way on its own.
Students use math to show how a wave's frequency, wavelength, and speed are connected, and how those relationships change depending on what the wave is moving through, like water, air, or glass.
Students weigh the pros and cons of storing and sending information digitally, such as comparing a vinyl record to a streaming file or a printed photo to one saved on a phone.
Students look at science articles or reports that claim certain types of light or radiation affect the body or materials, then judge whether the evidence actually supports those claims. The focus is on frequency: radio waves, microwaves, visible light, X-rays, and how each interacts with matter differently.
| Standard | Definition | Code |
|---|---|---|
| Use the periodic table as a model to predict the relative properties of… High School | Students use the periodic table to predict how an element will behave, based on where it sits in the table. Elements in the same column share similar properties because their atoms have the same number of electrons on the outside. | PS.PS1.1 |
| Construct and revise an explanation for the outcome of a simple chemical… High School | Students learn why certain atoms bond together by looking at how electrons are arranged on the outside of each atom. They use patterns from the periodic table to predict what new substance a chemical reaction will produce, then revise that explanation when new evidence shows up. | PS.PS1.2 |
| Apply scientific principles and evidence to provide an explanation about the… High School | Changing the temperature or concentration of chemicals speeds up or slows down a reaction. Students explain why using real evidence, such as why food spoils faster at room temperature than in the fridge. | PS.PS1.5 |
| Use mathematical representations to support the claim that atoms High School | Students use math to show that no atoms are created or destroyed in a chemical reaction. The number of each type of atom on one side of a chemical equation has to match the other side exactly. | PS.PS1.7 |
| Analyze and interpret data to support the claim of a causal relationship… High School | Students look at motion data to show that a bigger push or pull causes a bigger change in speed or direction. This is Newton's second law: more force on an object means more acceleration. | PS.PS2.1 |
| Use mathematical representations to support the explanation that the total… High School | Students use math to show that when two objects collide or push off each other, their combined momentum stays the same, as long as nothing outside the system is pushing or pulling on them. | PS.PS2.2 |
| Apply scientific and engineering ideas to design, evaluate High School | Students design and test something that cushions a collision, like padding inside a helmet or a bumper on a car. The goal is to reduce the force felt by the object when it hits something. | PS.PS2.3 |
| Plan and conduct an investigation to provide evidence that an electric current… High School | Students run hands-on experiments to show that running electricity through a wire creates a magnetic field, and that moving a magnet near a wire can push electricity through it. These two ideas are the foundation of motors and generators. | PS.PS2.5 |
| Create a computational model to calculate the change in the energy of one… High School | Students build a simple computer model that tracks energy moving between parts of a system. When they know how much energy flows in, out, or into other parts, they calculate what's left for the remaining part. | PS.PS3.1 |
| Develop and use models to illustrate that energy at the macroscopic scale can… High School | Energy can be stored in moving particles (like heated gas molecules speeding up) or in invisible fields (like the pull between magnets). Students model both to explain where energy goes when it seems to disappear. | PS.PS3.2 |
| Design, build, and refine a device that works within given constraints to… High School | Students design and build a real device that converts one form of energy into another, like turning motion into electricity or heat into light, then improve it based on how well it actually works. | PS.PS3.3 |
| Plan and conduct an investigation to provide evidence that the transfer of… High School | Students mix two substances at different temperatures and track how heat moves between them until both reach the same temperature. The experiment shows that heat always flows from warmer to cooler, never the other way on its own. | PS.PS3.4 |
| Use mathematical representations to explain both qualitative and quantitative… High School | Students use math to show how a wave's frequency, wavelength, and speed are connected, and how those relationships change depending on what the wave is moving through, like water, air, or glass. | PS.PS4.1 |
| Evaluate questions about the advantages and disadvantages of using a digital… High School | Students weigh the pros and cons of storing and sending information digitally, such as comparing a vinyl record to a streaming file or a printed photo to one saved on a phone. | PS.PS4.2 |
| Evaluate the validity and reliability of claims in published materials of the… High School | Students look at science articles or reports that claim certain types of light or radiation affect the body or materials, then judge whether the evidence actually supports those claims. The focus is on frequency: radio waves, microwaves, visible light, X-rays, and how each interacts with matter differently. | PS.PS4.4 |
Students use the periodic table to predict how an element will behave based on where it sits in the table. Elements in the same column share similar properties because their atoms have the same number of electrons in their outer shell.
Students use the periodic table to predict what will happen when elements react and form new compounds. They look at where elements sit on the table and how many electrons each atom has on its outer edge to explain why certain reactions turn out the way they do.
Students design and run an experiment comparing how substances behave (how they melt, dissolve, or hold together) to figure out how strongly the tiny particles inside are attracted to each other.
Chemical reactions either release heat or absorb it, depending on whether the new bonds formed store more or less energy than the bonds that broke. Students model this to explain why some reactions warm their surroundings and others cool them down.
Changing temperature, concentration, or surface area speeds up or slows down a chemical reaction. Students explain why those changes affect reaction rate, using evidence from experiments.
Students learn how to adjust a chemical reaction to get more (or less) of a desired product. That means deciding whether to change temperature, pressure, or concentration to shift the balance of a reaction that has reached a steady state.
In a chemical equation, the number of atoms on each side must match. Students use math to show that nothing is created or destroyed when substances react, just rearranged.
Nuclear reactions split atoms apart, smash them together, or let unstable atoms shed particles over time. Students model what happens inside the nucleus during each process and explain why these reactions release so much more energy than ordinary chemical reactions.
Students explain how the arrangement of atoms and molecules in a material determines what that material can do. For example, why some plastics are flexible, some coatings repel water, and some fibers resist heat.
Students design and build a real device that converts one form of energy into another, like turning motion into electricity or heat into light, then test and improve it until it works within the given limits.
Students design and run an experiment to show that heat always spreads out, moving from warmer objects to cooler ones until both reach the same temperature. The experiment connects to the second law of thermodynamics.
Students use a formula to show how a wave's speed, frequency, and wavelength are connected. When one value changes, like slowing a wave as it passes through water, the other values shift in a predictable way.
Light behaves like a wave in some experiments and like a stream of particles in others. Students learn to read real scientific evidence and argue which model better explains what's happening in a given situation.
| Standard | Definition | Code |
|---|---|---|
| Use the periodic table as a model to predict the relative properties of… High School | Students use the periodic table to predict how an element will behave based on where it sits in the table. Elements in the same column share similar properties because their atoms have the same number of electrons in their outer shell. | CH.PS1.1 |
| Construct and revise an explanation for the outcome of a simple chemical… High School | Students use the periodic table to predict what will happen when elements react and form new compounds. They look at where elements sit on the table and how many electrons each atom has on its outer edge to explain why certain reactions turn out the way they do. | CH.PS1.2 |
| Plan and conduct an investigation to compare the structure of substances at the… High School | Students design and run an experiment comparing how substances behave (how they melt, dissolve, or hold together) to figure out how strongly the tiny particles inside are attracted to each other. | CH.PS1.3 |
| Develop a model to illustrate that the release or absorption of energy from a… High School | Chemical reactions either release heat or absorb it, depending on whether the new bonds formed store more or less energy than the bonds that broke. Students model this to explain why some reactions warm their surroundings and others cool them down. | CH.PS1.4 |
| Apply scientific principles and evidence to provide an explanation about the… High School | Changing temperature, concentration, or surface area speeds up or slows down a chemical reaction. Students explain why those changes affect reaction rate, using evidence from experiments. | CH.PS1.5 |
| Refine the design of a chemical system by specifying a change in conditions… High School | Students learn how to adjust a chemical reaction to get more (or less) of a desired product. That means deciding whether to change temperature, pressure, or concentration to shift the balance of a reaction that has reached a steady state. | CH.PS1.6 |
| Use mathematical representations to support the claim that atoms High School | In a chemical equation, the number of atoms on each side must match. Students use math to show that nothing is created or destroyed when substances react, just rearranged. | CH.PS1.7 |
| Develop models to illustrate the changes in composition of the nucleus of the… High School | Nuclear reactions split atoms apart, smash them together, or let unstable atoms shed particles over time. Students model what happens inside the nucleus during each process and explain why these reactions release so much more energy than ordinary chemical reactions. | CH.PS1.8 |
| Communicate scientific and technical information about why the molecular level… High School | Students explain how the arrangement of atoms and molecules in a material determines what that material can do. For example, why some plastics are flexible, some coatings repel water, and some fibers resist heat. | CH.PS2.6 |
| Design, build, and refine a device that works within given constraints to… High School | Students design and build a real device that converts one form of energy into another, like turning motion into electricity or heat into light, then test and improve it until it works within the given limits. | CH.PS3.3 |
| Plan and conduct an investigation to provide evidence that the transfer of… High School | Students design and run an experiment to show that heat always spreads out, moving from warmer objects to cooler ones until both reach the same temperature. The experiment connects to the second law of thermodynamics. | CH.PS3.4 |
| Use mathematical representations to support a claim regarding relationships… High School | Students use a formula to show how a wave's speed, frequency, and wavelength are connected. When one value changes, like slowing a wave as it passes through water, the other values shift in a predictable way. | CH.PS4.1 |
| Develop an argument for how scientific evidence supports the explanation that… High School | Light behaves like a wave in some experiments and like a stream of particles in others. Students learn to read real scientific evidence and argue which model better explains what's happening in a given situation. | CH.PS4.3 |
Atoms can split apart or merge together, releasing enormous amounts of energy. Students model what happens inside the nucleus during fission, fusion, and radioactive decay to show how the atom's core changes and where that energy comes from.
Students look at real data from moving objects to confirm a core rule in physics: push harder and something speeds up faster; make it heavier and it takes more force to move at the same rate.
Students use math to show that when objects collide or push apart, the total momentum of the group stays the same as long as no outside force is acting on them. Think of billiard balls: the motion shared across all of them before and after a collision adds up to the same amount.
Students design and test something that protects an object from a hard hit, like padding around a phone or a crumple zone in a car. The goal is to reduce the force of impact so the object takes less damage.
Students use two formulas to predict how strongly objects pull on each other through gravity and push or pull through electric charge. Both forces grow weaker as objects move farther apart and stronger as mass or charge increases.
Students run hands-on experiments to show that electricity flowing through a wire creates a magnetic field, and that moving a magnet near a wire can generate electricity. These two ideas are the foundation of motors and generators.
Students build a simple computer model that tracks how energy moves between parts of a system. When they know how much energy one part gains or loses, they calculate what happened to the rest.
Energy comes in two forms: moving particles (like the molecules in hot water) and invisible fields (like the pull of a magnet). Students model how everyday energy, such as heat or electricity, traces back to one or both of those sources.
Students design and build a real device that turns one form of energy into another, like converting heat into motion or light into electricity, then test and improve it until it works within the given limits.
Students plan and run an experiment to show that heat naturally moves from hotter objects to cooler ones until everything reaches the same temperature. It's the science behind why a hot drink cools down and a cold drink warms up.
Students draw or diagram two objects that push or pull each other through electric or magnetic fields, then trace how the energy of each object changes as the force between them changes.
Students use an equation to show how a wave's frequency and wavelength determine its speed, and how those numbers shift when the wave moves from one material to another, like air into water.
Students look at why digital signals, like audio files or text messages, are easier to copy and store without losing quality, and where that convenience comes with tradeoffs like privacy risk or data loss.
Light behaves like a wave in some experiments and like a stream of particles in others. Students learn to read scientific evidence and argue which model better explains what's happening in a given situation.
Students read science articles and judge whether the evidence actually supports the claim, specifically claims about what happens when radio waves, visible light, X-rays, or other electromagnetic waves are absorbed by different materials.
Students explain how real devices like cell phones, radios, and medical scanners use wave behavior to send and receive information or energy. The focus is on connecting the physics of waves to how the technology actually works.
| Standard | Definition | Code |
|---|---|---|
| Develop models to illustrate the changes in the composition of the nucleus of… High School | Atoms can split apart or merge together, releasing enormous amounts of energy. Students model what happens inside the nucleus during fission, fusion, and radioactive decay to show how the atom's core changes and where that energy comes from. | PH.PS1.8 |
| Analyze and interpret data to support the claim that Newton's second law of… High School | Students look at real data from moving objects to confirm a core rule in physics: push harder and something speeds up faster; make it heavier and it takes more force to move at the same rate. | PH.PS2.1 |
| Use mathematical representations to support the claim that the total momentum… High School | Students use math to show that when objects collide or push apart, the total momentum of the group stays the same as long as no outside force is acting on them. Think of billiard balls: the motion shared across all of them before and after a collision adds up to the same amount. | PH.PS2.2 |
| Apply scientific and engineering ideas to design, evaluate High School | Students design and test something that protects an object from a hard hit, like padding around a phone or a crumple zone in a car. The goal is to reduce the force of impact so the object takes less damage. | PH.PS2.3 |
| Use mathematical representations of Newton's Law of Gravitation and Coulomb's… High School | Students use two formulas to predict how strongly objects pull on each other through gravity and push or pull through electric charge. Both forces grow weaker as objects move farther apart and stronger as mass or charge increases. | PH.PS2.4 |
| Plan and conduct an investigation to provide evidence that an electric current… High School | Students run hands-on experiments to show that electricity flowing through a wire creates a magnetic field, and that moving a magnet near a wire can generate electricity. These two ideas are the foundation of motors and generators. | PH.PS2.5 |
| Create a computational model to calculate the change in the energy of one… High School | Students build a simple computer model that tracks how energy moves between parts of a system. When they know how much energy one part gains or loses, they calculate what happened to the rest. | PH.PS3.1 |
| Develop and use models to illustrate that energy at the macroscopic scale can… High School | Energy comes in two forms: moving particles (like the molecules in hot water) and invisible fields (like the pull of a magnet). Students model how everyday energy, such as heat or electricity, traces back to one or both of those sources. | PH.PS3.2 |
| Design, build, and refine a device that works within given constraints to… High School | Students design and build a real device that turns one form of energy into another, like converting heat into motion or light into electricity, then test and improve it until it works within the given limits. | PH.PS3.3 |
| Plan and conduct an investigation to provide evidence that the transfer of… High School | Students plan and run an experiment to show that heat naturally moves from hotter objects to cooler ones until everything reaches the same temperature. It's the science behind why a hot drink cools down and a cold drink warms up. | PH.PS3.4 |
| Develop and use a model of two objects interacting through electric or magnetic… High School | Students draw or diagram two objects that push or pull each other through electric or magnetic fields, then trace how the energy of each object changes as the force between them changes. | PH.PS3.5 |
| Use mathematical representations to support a claim regarding relationships… High School | Students use an equation to show how a wave's frequency and wavelength determine its speed, and how those numbers shift when the wave moves from one material to another, like air into water. | PH.PS4.1 |
| Evaluate questions about the advantages and disadvantages of using digital… High School | Students look at why digital signals, like audio files or text messages, are easier to copy and store without losing quality, and where that convenience comes with tradeoffs like privacy risk or data loss. | PH.PS4.2 |
| Develop an argument for how scientific evidence supports the explanation that… High School | Light behaves like a wave in some experiments and like a stream of particles in others. Students learn to read scientific evidence and argue which model better explains what's happening in a given situation. | PH.PS4.3 |
| Evaluate the validity and reliability of claims in published materials of the… High School | Students read science articles and judge whether the evidence actually supports the claim, specifically claims about what happens when radio waves, visible light, X-rays, or other electromagnetic waves are absorbed by different materials. | PH.PS4.4 |
| Communicate technical information about how some technological devices use the… High School | Students explain how real devices like cell phones, radios, and medical scanners use wave behavior to send and receive information or energy. The focus is on connecting the physics of waves to how the technology actually works. | PH.PS4.5 |
DNA holds the instructions for building proteins, and proteins do the actual work inside cells. Students learn how the sequence of bases in DNA gets copied into a message, then read by the cell to assemble the right protein for the right job.
Living things are organized in levels, from cells to tissues to organs to whole-body systems. Students build or use a model to show how each level depends on the one below it to keep the organism alive.
Students design and run an experiment to show why the body must keep conditions like temperature or blood sugar within a steady range. When those conditions drift too far, cells and organs stop working correctly.
Cells copy themselves through a process called mitosis, then develop into specialized types like muscle, skin, or nerve cells. Students use diagrams or models to show how this division and specialization build and maintain a complex organism like the human body.
Photosynthesis is how plants turn sunlight into food. Students use a diagram or model to show how a plant captures light and converts it into sugar stored in the plant's cells.
Sugar molecules contain the carbon, hydrogen, and oxygen that living things rearrange, sometimes adding nitrogen or other elements, to build amino acids and larger molecules like proteins. Students explain how that process works and revise their thinking when new evidence shows up.
Cellular respiration is how cells break down food and oxygen to release usable energy. Students model the chemical bond-breaking and bond-building that happen inside cells during this process.
Students use graphs or equations to explain why a habitat can only support so many animals. They look at factors like food, water, and space to show what sets that limit.
Students use graphs and data to explain what drives population size and species variety in an ecosystem, then update their explanation when new evidence changes the picture.
Students trace how matter like carbon and oxygen cycles through living things and the environment, and how energy moves through that same system. They compare what happens with oxygen present versus without it, then build and revise an explanation using real evidence.
Students use math, such as ratios or diagrams with numbers, to show how energy moves through a food web and how matter like carbon or nitrogen cycles through living things and back into the environment.
Students trace how carbon moves through living things, the air, water, and soil by modeling what happens when plants capture sunlight and when organisms break down food. The two processes are a loop, not a one-way trip.
Students look at real data to decide whether ecosystems naturally bounce back toward a steady balance, and what happens when conditions shift enough that a whole new kind of ecosystem takes over instead.
Students look at real examples of animals working in groups, such as hunting in packs or warning calls in flocks, and decide whether that group behavior helps individuals survive and have offspring.
DNA carries the instructions that determine a person's traits, and those instructions get passed from parents to children through chromosomes. Students learn to ask precise questions about how that process works.
Students learn why children inherit similar but not identical traits from their parents. They study how shuffled genes, copying errors in DNA, and environmental triggers like radiation can all create new genetic variations passed down through generations.
Students use probability and data to explain why a trait, like eye color or height, shows up at different rates across a population. They look at patterns in real groups to understand why variation exists, not just in one family, but across many.
Students explain how fossils, DNA comparisons, and anatomical similarities across species all point to the same conclusion: living things share common ancestors and have changed over time.
Students explain why some traits spread through a population and others disappear, using evidence that ties together reproduction rates, inherited variation, resource competition, and survival.
Students use basic probability and data to explain why a helpful inherited trait spreads through a population over time. If a trait helps an organism survive and reproduce, more offspring carry it each generation.
Natural selection is survival editing: traits that help organisms survive and reproduce become more common over generations. Students use real evidence to explain how a population slowly shifts until most individuals share features that fit their environment.
Students look at real data, such as population counts or fossil records, to explain why a species might thrive, split into a new species, or disappear when its environment changes.
| Standard | Definition | Code |
|---|---|---|
| Construct an explanation based on evidence for how the structure of DNA… High School | DNA holds the instructions for building proteins, and proteins do the actual work inside cells. Students learn how the sequence of bases in DNA gets copied into a message, then read by the cell to assemble the right protein for the right job. | B.LS1.1 |
| Develop and use a model to illustrate the hierarchical organization of… High School | Living things are organized in levels, from cells to tissues to organs to whole-body systems. Students build or use a model to show how each level depends on the one below it to keep the organism alive. | B.LS1.2 |
| Plan and conduct an investigation to provide evidence of the importance of… High School | Students design and run an experiment to show why the body must keep conditions like temperature or blood sugar within a steady range. When those conditions drift too far, cells and organs stop working correctly. | B.LS1.3 |
| Use a model to illustrate the role of cellular division High School | Cells copy themselves through a process called mitosis, then develop into specialized types like muscle, skin, or nerve cells. Students use diagrams or models to show how this division and specialization build and maintain a complex organism like the human body. | B.LS1.4 |
| Use a model to illustrate how photosynthesis transforms light energy into… High School | Photosynthesis is how plants turn sunlight into food. Students use a diagram or model to show how a plant captures light and converts it into sugar stored in the plant's cells. | B.LS1.5 |
| Construct and revise an explanation based on evidence for how carbon, hydrogen High School | Sugar molecules contain the carbon, hydrogen, and oxygen that living things rearrange, sometimes adding nitrogen or other elements, to build amino acids and larger molecules like proteins. Students explain how that process works and revise their thinking when new evidence shows up. | B.LS1.6 |
| Use a model to illustrate that cellular respiration is a chemical process… High School | Cellular respiration is how cells break down food and oxygen to release usable energy. Students model the chemical bond-breaking and bond-building that happen inside cells during this process. | B.LS1.7 |
| Use mathematical and/or computational representations to support explanations… High School | Students use graphs or equations to explain why a habitat can only support so many animals. They look at factors like food, water, and space to show what sets that limit. | B.LS2.1 |
| Use mathematical representations to support and revise explanations based on… High School | Students use graphs and data to explain what drives population size and species variety in an ecosystem, then update their explanation when new evidence changes the picture. | B.LS2.2 |
| Construct and revise an explanation based on evidence for the cycling of matter… High School | Students trace how matter like carbon and oxygen cycles through living things and the environment, and how energy moves through that same system. They compare what happens with oxygen present versus without it, then build and revise an explanation using real evidence. | B.LS2.3 |
| Use a mathematical representation to support claims for the cycling of matter… High School | Students use math, such as ratios or diagrams with numbers, to show how energy moves through a food web and how matter like carbon or nitrogen cycles through living things and back into the environment. | B.LS2.4 |
| Develop a model to illustrate the role of photosynthesis and cellular… High School | Students trace how carbon moves through living things, the air, water, and soil by modeling what happens when plants capture sunlight and when organisms break down food. The two processes are a loop, not a one-way trip. | B.LS2.5 |
| Evaluate the claims, evidence High School | Students look at real data to decide whether ecosystems naturally bounce back toward a steady balance, and what happens when conditions shift enough that a whole new kind of ecosystem takes over instead. | B.LS2.6 |
| Evaluate evidence for the role of group behavior on individual and species'… High School | Students look at real examples of animals working in groups, such as hunting in packs or warning calls in flocks, and decide whether that group behavior helps individuals survive and have offspring. | B.LS2.8 |
| Ask questions to clarify relationships about the role of DNA and chromosomes in… High School | DNA carries the instructions that determine a person's traits, and those instructions get passed from parents to children through chromosomes. Students learn to ask precise questions about how that process works. | B.LS3.1 |
| Make and defend a claim based on evidence that inheritable genetic variations… High School | Students learn why children inherit similar but not identical traits from their parents. They study how shuffled genes, copying errors in DNA, and environmental triggers like radiation can all create new genetic variations passed down through generations. | B.LS3.2 |
| Apply concepts of statistics and probability to explain the variation and… High School | Students use probability and data to explain why a trait, like eye color or height, shows up at different rates across a population. They look at patterns in real groups to understand why variation exists, not just in one family, but across many. | B.LS3.3 |
| Communicate scientific information that common ancestry and biological… High School | Students explain how fossils, DNA comparisons, and anatomical similarities across species all point to the same conclusion: living things share common ancestors and have changed over time. | B.LS4.1 |
| Construct an explanation based on evidence that biological diversity is… High School | Students explain why some traits spread through a population and others disappear, using evidence that ties together reproduction rates, inherited variation, resource competition, and survival. | B.LS4.2 |
| Apply concepts of statistics and probability to support explanations that… High School | Students use basic probability and data to explain why a helpful inherited trait spreads through a population over time. If a trait helps an organism survive and reproduce, more offspring carry it each generation. | B.LS4.3 |
| Construct an explanation based on evidence for how natural selection leads to… High School | Natural selection is survival editing: traits that help organisms survive and reproduce become more common over generations. Students use real evidence to explain how a population slowly shifts until most individuals share features that fit their environment. | B.LS4.4 |
| Evaluate the evidence supporting claims that changes in environmental… High School | Students look at real data, such as population counts or fossil records, to explain why a species might thrive, split into a new species, or disappear when its environment changes. | B.LS4.5 |
Students trace the sun's life from birth to eventual burnout, showing how hydrogen atoms fuse in the core to release the energy that travels across space and warms Earth.
Students explain how the universe began in a single explosive event and has been expanding ever since. They use evidence from starlight, the movement of distant galaxies, and what the universe is made of to support that explanation.
Stars fuse lighter elements into heavier ones under extreme heat and pressure. This process, running through a star's entire life cycle, is what created most of the elements found on Earth today.
Students use math to find patterns in how planets and moons move, then use those patterns to predict where an orbiting object will be at a given time.
Students examine how continents and ocean floors move over millions of years, then use that movement to explain why rocks in one place are ancient while rocks nearby are brand new.
Students use evidence from ancient rocks, meteorites, and other planetary surfaces to piece together how Earth formed and changed in its earliest history.
Students build diagrams or models showing how slow processes deep inside Earth and faster ones at the surface, like eruptions or erosion, work together over millions of years to shape mountain ranges, ocean trenches, and ocean floors.
Looking at real data, students explain how one change on Earth's surface (like a wildfire or melting ice) sets off a chain reaction that shifts other parts of the planet, such as the atmosphere, oceans, or living things.
Students build a model of Earth's interior to show how heat from deep inside the planet moves rock and other material slowly upward, then back down, in a continuous loop.
Students examine real climate data to understand how changes in energy entering or leaving Earth, such as from the sun or greenhouse gases, drive shifts in temperature, weather patterns, and atmospheric conditions over time.
Students investigate why water behaves the way it does and how that shapes the land around it. They look at how water soaks into soil, wears down rock, and moves across surfaces over time.
Students build a model that tracks carbon as it moves through the ocean, air, rocks, and living things, using numbers to show how much moves where and why.
Students study how living things and Earth's oceans, atmosphere, and land have shaped each other over billions of years, and argue with evidence why that back-and-forth produced long stable periods and sudden shifts.
Students examine how natural resources, hazards like floods or earthquakes, and shifting climate conditions shape where and how people live, work, and build communities. Evidence from real events drives the explanation.
Students compare real proposals for mining, drilling, or renewable energy projects, weighing what each option costs against what it delivers. The goal is to judge which solution works best at both a local and a national scale.
Geological processes like volcanic activity, erosion, and plate movement concentrate minerals, fossil fuels, and fresh water in specific places. Students explain why resources are not spread evenly across Earth, using scientific evidence to support their reasoning.
| Standard | Definition | Code |
|---|---|---|
| Develop a model based on evidence to illustrate the life span of the sun and… High School | Students trace the sun's life from birth to eventual burnout, showing how hydrogen atoms fuse in the core to release the energy that travels across space and warms Earth. | ES.ESS1.1 |
| Construct an explanation of how the universe formed as a single point and… High School | Students explain how the universe began in a single explosive event and has been expanding ever since. They use evidence from starlight, the movement of distant galaxies, and what the universe is made of to support that explanation. | ES.ESS1.2 |
| Construct an explanation about the process that causes stars to produce… High School | Stars fuse lighter elements into heavier ones under extreme heat and pressure. This process, running through a star's entire life cycle, is what created most of the elements found on Earth today. | ES.ESS1.3 |
| Use mathematical or computational representations to determine patterns that… High School | Students use math to find patterns in how planets and moons move, then use those patterns to predict where an orbiting object will be at a given time. | ES.ESS1.4 |
| Evaluate evidence in the patterns of the past and current movements of… High School | Students examine how continents and ocean floors move over millions of years, then use that movement to explain why rocks in one place are ancient while rocks nearby are brand new. | ES.ESS1.5 |
| Apply scientific reasoning and evidence from ancient Earth materials, meteorites High School | Students use evidence from ancient rocks, meteorites, and other planetary surfaces to piece together how Earth formed and changed in its earliest history. | ES.ESS1.6 |
| Develop a model to illustrate how Earth's internal and surface processes… High School | Students build diagrams or models showing how slow processes deep inside Earth and faster ones at the surface, like eruptions or erosion, work together over millions of years to shape mountain ranges, ocean trenches, and ocean floors. | ES.ESS2.1 |
| Analyze geoscience data to make the claim that one change to Earth's surface… High School | Looking at real data, students explain how one change on Earth's surface (like a wildfire or melting ice) sets off a chain reaction that shifts other parts of the planet, such as the atmosphere, oceans, or living things. | ES.ESS2.2 |
| Develop a model based on evidence of Earth's interior to describe the cycling… High School | Students build a model of Earth's interior to show how heat from deep inside the planet moves rock and other material slowly upward, then back down, in a continuous loop. | ES.ESS2.3 |
| Analyze and interpret data to explore how variations in the flow of energy into… High School | Students examine real climate data to understand how changes in energy entering or leaving Earth, such as from the sun or greenhouse gases, drive shifts in temperature, weather patterns, and atmospheric conditions over time. | ES.ESS2.4 |
| Plan and conduct investigations of how the structure and resulting properties… High School | Students investigate why water behaves the way it does and how that shapes the land around it. They look at how water soaks into soil, wears down rock, and moves across surfaces over time. | ES.ESS2.5 |
| Develop a quantitative model to describe the cycling of carbon among the… High School | Students build a model that tracks carbon as it moves through the ocean, air, rocks, and living things, using numbers to show how much moves where and why. | ES.ESS2.6 |
| Engage in argument from evidence for how the simultaneous co-evolution of… High School | Students study how living things and Earth's oceans, atmosphere, and land have shaped each other over billions of years, and argue with evidence why that back-and-forth produced long stable periods and sudden shifts. | ES.ESS2.7 |
| Construct an explanation based on evidence for how the availability of natural… High School | Students examine how natural resources, hazards like floods or earthquakes, and shifting climate conditions shape where and how people live, work, and build communities. Evidence from real events drives the explanation. | ES.ESS3.1 |
| Evaluate competing design solutions for developing, managing High School | Students compare real proposals for mining, drilling, or renewable energy projects, weighing what each option costs against what it delivers. The goal is to judge which solution works best at both a local and a national scale. | ES.ESS3.2 |
| Construct a scientific explanation from evidence for how geological processes… High School | Geological processes like volcanic activity, erosion, and plate movement concentrate minerals, fossil fuels, and fresh water in specific places. Students explain why resources are not spread evenly across Earth, using scientific evidence to support their reasoning. | ES.ESS3.5 |
Students use graphs or equations to explain why a habitat can only support so many animals. They look at how food, water, and space set a ceiling on population size, from a small pond to an entire region.
Students use graphs, data tables, and calculations to explain what drives population changes in an ecosystem, then revise their explanation when new evidence points a different way. The focus is on real factors: food supply, habitat size, predators, and disease.
Students use graphs or equations to show how energy moves through a food web and how matter like carbon or nitrogen cycles through living things and back into the environment.
Students look at real data to figure out why a forest, pond, or grassland stays balanced over time, and what happens when a drought, fire, or new species tips that balance toward something unrecognizable.
Students design and test a real solution to a human-caused environmental problem, such as habitat loss or pollution, then revise it based on what works. The focus is on reducing harm to wildlife and ecosystems.
Students build a model showing how slow processes deep inside the Earth and faster ones at the surface, like erosion or volcanic eruptions, work together over millions of years to shape mountains, ocean trenches, and continents.
Looking at real data, students explain how one change on Earth's surface (like a melting glacier or a wildfire) sets off a chain reaction that shifts other systems, such as temperature, ocean levels, or the water cycle.
Students build a diagram or model showing how heat from deep inside the Earth moves rock and other material slowly upward, then back down, in a repeating cycle. It explains why tectonic plates shift and volcanoes form.
Students look at temperature records, ocean data, and atmospheric readings to figure out how shifts in energy flow change weather patterns and drive long-term climate change.
Students investigate how water's unusual properties, like expanding when it freezes or clinging to surfaces, shape soil, rock, and landforms over time.
Students build a model using real numbers to track how carbon moves through the ocean, air, land, and living things. The model shows where carbon goes and how fast it moves between each part of the Earth system.
Students use fossil records, rock layers, and atmospheric data to argue how living things and Earth's systems shaped each other over billions of years, producing long stretches of stability broken by dramatic shifts.
Students explain how natural resources, disasters like floods or droughts, and shifting weather patterns shape where people live and how they work. Evidence from real events backs the explanation.
Students compare real proposals for mining or energy production, weighing what each option costs against what it delivers. The goal is to decide which approach does the most good with the least harm, at both a local and a national scale.
Students use computer models to explore how population growth, resource use, and wildlife loss affect each other over time, and what it takes for those systems to stay in balance.
Students look at real proposals for fixing an environmental problem, such as reducing pollution or slowing habitat loss, and weigh the trade-offs to decide which approach would work best.
| Standard | Definition | Code |
|---|---|---|
| Use mathematical and/or computational representations to support explanations… High School | Students use graphs or equations to explain why a habitat can only support so many animals. They look at how food, water, and space set a ceiling on population size, from a small pond to an entire region. | EN.LS2.1 |
| Use mathematical representations to support and revise explanations based on… High School | Students use graphs, data tables, and calculations to explain what drives population changes in an ecosystem, then revise their explanation when new evidence points a different way. The focus is on real factors: food supply, habitat size, predators, and disease. | EN.LS2.2 |
| Use a mathematical representation to support claims for the cycling of matter… High School | Students use graphs or equations to show how energy moves through a food web and how matter like carbon or nitrogen cycles through living things and back into the environment. | EN.LS2.4 |
| Evaluate the claims, evidence High School | Students look at real data to figure out why a forest, pond, or grassland stays balanced over time, and what happens when a drought, fire, or new species tips that balance toward something unrecognizable. | EN.LS2.6 |
| Design, evaluate, and refine a solution for reducing the impacts of human… High School | Students design and test a real solution to a human-caused environmental problem, such as habitat loss or pollution, then revise it based on what works. The focus is on reducing harm to wildlife and ecosystems. | EN.LS2.7 |
| Develop a model to illustrate how Earth's internal and surface processes… High School | Students build a model showing how slow processes deep inside the Earth and faster ones at the surface, like erosion or volcanic eruptions, work together over millions of years to shape mountains, ocean trenches, and continents. | EN.ESS2.1 |
| Analyze geoscience data to make the claim that one change to Earth's surface… High School | Looking at real data, students explain how one change on Earth's surface (like a melting glacier or a wildfire) sets off a chain reaction that shifts other systems, such as temperature, ocean levels, or the water cycle. | EN.ESS2.2 |
| Develop a model based on evidence of Earth's interior to describe the cycling… High School | Students build a diagram or model showing how heat from deep inside the Earth moves rock and other material slowly upward, then back down, in a repeating cycle. It explains why tectonic plates shift and volcanoes form. | EN.ESS2.3 |
| Analyze and interpret data to explore how variations in the flow of energy into… High School | Students look at temperature records, ocean data, and atmospheric readings to figure out how shifts in energy flow change weather patterns and drive long-term climate change. | EN.ESS2.4 |
| Plan and conduct investigations of how the structure and resulting properties… High School | Students investigate how water's unusual properties, like expanding when it freezes or clinging to surfaces, shape soil, rock, and landforms over time. | EN.ESS2.5 |
| Develop a quantitative model to describe the cycling of carbon among the… High School | Students build a model using real numbers to track how carbon moves through the ocean, air, land, and living things. The model shows where carbon goes and how fast it moves between each part of the Earth system. | EN.ESS2.6 |
| Engage in argument from evidence for how the simultaneous co-evolution of… High School | Students use fossil records, rock layers, and atmospheric data to argue how living things and Earth's systems shaped each other over billions of years, producing long stretches of stability broken by dramatic shifts. | EN.ESS2.7 |
| Construct an explanation based on evidence for how the availability of natural… High School | Students explain how natural resources, disasters like floods or droughts, and shifting weather patterns shape where people live and how they work. Evidence from real events backs the explanation. | EN.ESS3.1 |
| Evaluate competing design solutions for developing, managing High School | Students compare real proposals for mining or energy production, weighing what each option costs against what it delivers. The goal is to decide which approach does the most good with the least harm, at both a local and a national scale. | EN.ESS3.2 |
| Use computational simulations to illustrate changes between the relationships… High School | Students use computer models to explore how population growth, resource use, and wildlife loss affect each other over time, and what it takes for those systems to stay in balance. | EN.ESS3.3 |
| Evaluate design solutions for a major global or local environmental problem… High School | Students look at real proposals for fixing an environmental problem, such as reducing pollution or slowing habitat loss, and weigh the trade-offs to decide which approach would work best. | EN.ESS3.4 |
Most students take a sequence that includes biology, chemistry, and either physics or physical science, with earth or environmental science as an option. Topics range from cells and DNA to atoms, motion, energy, ecosystems, and the history of the planet. Students also design experiments and build arguments from evidence.
Ask students to explain the idea out loud in their own words, then point at one part that still feels fuzzy. Looking up a short video together on that one piece works better than trying to reteach the whole chapter. Curiosity matters more than expertise here.
A common arc starts with atomic structure and the periodic table, moves into bonding and reactions, then into energy changes, reaction rates, and equilibrium. Saving nuclear chemistry and a closer look at waves for later in the year gives students the atomic background they need first.
Ask students to walk through a recent lab or problem and explain why they did each step. If they can connect the activity to a bigger idea, like why energy was released or how a trait gets passed on, they are tracking well. Memorized answers without reasoning are the warning sign.
Stoichiometry and mole conversions, balancing forces in two dimensions, and the link between photosynthesis and cellular respiration tend to come back unfinished. Building short retrieval practice into the start of class for two or three weeks after a unit helps these stick.
Algebra is the workhorse. Students rearrange equations, work with units, use scientific notation, and read graphs. A student who is shaky on solving for a variable will struggle in physics before the physics itself becomes the problem, so pairing math review with new content helps.
Watch a short science video on something they actually wonder about, then write three sentences about what they learned. Cooking, gardening, and fixing things around the house are also real science practice. The habit of asking why builds the muscle teachers are trying to grow.
Plan for students to design at least part of an investigation each quarter, not just follow a recipe. Choosing a variable, predicting an outcome, and explaining results against evidence are skills that show up across every unit. Short investigations done well beat long ones done passively.
By the end of the year, students should be able to read a graph or data table, build an argument from evidence, and explain a phenomenon using a model. A student who can do those three things in biology can do them in any science class that comes next.