Linear equations and inequalities
Students start the year with the math of straight lines. They write equations to describe real situations like phone plans or saving money, solve for unknowns, and graph the results.
This is the year math stops being about finding one answer and starts being about working with whole families of relationships. Students use letters to stand in for changing quantities, then graph those relationships as lines, curves, and growth patterns on a coordinate grid. They learn to spot when something grows steadily versus when it doubles, and they solve real situations by setting up two equations at once. By spring, students can look at a word problem, write an equation that matches it, and sketch its graph.
Students start the year with the math of straight lines. They write equations to describe real situations like phone plans or saving money, solve for unknowns, and graph the results.
Students work with two equations at once to find where two situations meet, like comparing prices from two stores. They solve by graphing and by working with the equations directly.
Students move from straight lines to curves shaped like a U. They learn how these curves describe things like a ball arching through the air and how to find where the curve crosses zero.
Students study patterns that double or halve, like money earning interest or a population shrinking. They write and graph these patterns and compare them to the straight-line patterns from earlier in the year.
Students close the year by adding, subtracting, and multiplying longer expressions, then turn to real data. They look at one set of numbers at a time and at pairs of numbers to spot trends and draw conclusions.
Students read a math problem carefully, figure out what it's actually asking, and keep trying even when the first approach doesn't work.
Students take a real situation, turn it into a math problem, solve it, then check whether the answer actually makes sense in the original situation.
Students back up math answers with reasons, not just steps, and explain why another student's approach is right or where it goes wrong.
Students use equations, graphs, or diagrams to make sense of a real situation, like figuring out how long a road trip takes at a given speed. The math model helps them check whether their answer is reasonable.
Students choose the right tool for the math problem in front of them, whether that's a calculator, a graph, a ruler, or pencil and paper. Knowing when to use a tool matters as much as knowing how.
Students use the right math words, label their units (like miles or dollars), and check their calculations carefully. Precision means every part of the answer, not just the final number, is correct.
Students learn to spot patterns and shortcuts hiding inside a math problem. Recognizing that a complicated expression can be broken into familiar pieces helps them solve it faster and with fewer steps.
Students notice when the same steps keep showing up in a problem and use that pattern to find a shortcut or write a general rule. Instead of solving from scratch each time, they ask why the pattern works.
Students read a math problem carefully, figure out what it's actually asking, and keep trying even when the first approach doesn't work.
Students take a real problem, turn it into numbers or symbols to solve it, then check that the answer still makes sense in the original situation.
Students build a math argument by showing why their answer is correct, then explain where a classmate's reasoning breaks down. The focus is on justifying steps with logic, not just getting the right answer.
Students use equations, graphs, or diagrams to make sense of real situations, like figuring out how a business's profit changes over time. The math becomes a tool for solving problems that actually exist outside the classroom.
Students choose the right tool for the problem, whether that's a calculator, graph, table, or sketch, and know when a tool helps and when it gets in the way.
Students use math terms correctly and label their answers with the right units. A calculation without units or a misused word like "equation" instead of "expression" counts as an incomplete answer.
Students recognize familiar patterns inside complex expressions and use that structure to simplify or solve problems. For example, they might spot a hidden quadratic inside a longer equation and apply what they already know.
Students notice when the same steps keep showing up in different problems and use that pattern as a shortcut or rule. Instead of solving from scratch each time, they ask why the pattern works and write it down in a way they can reuse.
Students read a math problem carefully, figure out what it's actually asking, and keep working even when the path isn't obvious. They check whether their answer makes sense before calling it done.
Students connect the numbers and symbols in a geometry problem to real shapes, measurements, and situations. They move between the math on the page and the actual meaning behind it.
Students build a mathematical argument to support their answer, then explain why another student's reasoning is right or wrong. The focus is on using logic and evidence, not just arriving at a correct answer.
Students use equations, graphs, or diagrams to represent a real-world situation, then check whether the math matches what's actually happening and adjust if it doesn't.
Students choose the right tool for the math at hand, such as a ruler, compass, calculator, or graph, and know when each one helps and when it gets in the way.
Students use exact math language and correct units when they explain their work. A length stays in centimeters, an angle stays in degrees, and the words they choose mean what they say.
Students learn to spot patterns and hidden structure in math problems, like recognizing that a complex shape is really just simpler pieces combined. That habit of looking beneath the surface makes solving new problems faster and more reliable.
Students notice when the same steps keep showing up in a problem and use that pattern as a shortcut or rule. Instead of starting from scratch each time, they ask why the pattern works and write it down in a way they can reuse.
| Standard | Definition | Code |
|---|---|---|
| Make Sense of Problems Algebra I | Students read a math problem carefully, figure out what it's actually asking, and keep trying even when the first approach doesn't work. | OH-MATH.MP.hs-algebra-1.1 |
| Reason Quantitatively Algebra I | Students take a real situation, turn it into a math problem, solve it, then check whether the answer actually makes sense in the original situation. | OH-MATH.MP.hs-algebra-1.2 |
| Construct Arguments Algebra I | Students back up math answers with reasons, not just steps, and explain why another student's approach is right or where it goes wrong. | OH-MATH.MP.hs-algebra-1.3 |
| Model with Mathematics Algebra I | Students use equations, graphs, or diagrams to make sense of a real situation, like figuring out how long a road trip takes at a given speed. The math model helps them check whether their answer is reasonable. | OH-MATH.MP.hs-algebra-1.4 |
| Use Tools Strategically Algebra I | Students choose the right tool for the math problem in front of them, whether that's a calculator, a graph, a ruler, or pencil and paper. Knowing when to use a tool matters as much as knowing how. | OH-MATH.MP.hs-algebra-1.5 |
| Attend to Precision Algebra I | Students use the right math words, label their units (like miles or dollars), and check their calculations carefully. Precision means every part of the answer, not just the final number, is correct. | OH-MATH.MP.hs-algebra-1.6 |
| Use Structure Algebra I | Students learn to spot patterns and shortcuts hiding inside a math problem. Recognizing that a complicated expression can be broken into familiar pieces helps them solve it faster and with fewer steps. | OH-MATH.MP.hs-algebra-1.7 |
| Express Regularity Algebra I | Students notice when the same steps keep showing up in a problem and use that pattern to find a shortcut or write a general rule. Instead of solving from scratch each time, they ask why the pattern works. | OH-MATH.MP.hs-algebra-1.8 |
| Make Sense of Problems Algebra II | Students read a math problem carefully, figure out what it's actually asking, and keep trying even when the first approach doesn't work. | OH-MATH.MP.hs-algebra-2.1 |
| Reason Quantitatively Algebra II | Students take a real problem, turn it into numbers or symbols to solve it, then check that the answer still makes sense in the original situation. | OH-MATH.MP.hs-algebra-2.2 |
| Construct Arguments Algebra II | Students build a math argument by showing why their answer is correct, then explain where a classmate's reasoning breaks down. The focus is on justifying steps with logic, not just getting the right answer. | OH-MATH.MP.hs-algebra-2.3 |
| Model with Mathematics Algebra II | Students use equations, graphs, or diagrams to make sense of real situations, like figuring out how a business's profit changes over time. The math becomes a tool for solving problems that actually exist outside the classroom. | OH-MATH.MP.hs-algebra-2.4 |
| Use Tools Strategically Algebra II | Students choose the right tool for the problem, whether that's a calculator, graph, table, or sketch, and know when a tool helps and when it gets in the way. | OH-MATH.MP.hs-algebra-2.5 |
| Attend to Precision Algebra II | Students use math terms correctly and label their answers with the right units. A calculation without units or a misused word like "equation" instead of "expression" counts as an incomplete answer. | OH-MATH.MP.hs-algebra-2.6 |
| Use Structure Algebra II | Students recognize familiar patterns inside complex expressions and use that structure to simplify or solve problems. For example, they might spot a hidden quadratic inside a longer equation and apply what they already know. | OH-MATH.MP.hs-algebra-2.7 |
| Express Regularity Algebra II | Students notice when the same steps keep showing up in different problems and use that pattern as a shortcut or rule. Instead of solving from scratch each time, they ask why the pattern works and write it down in a way they can reuse. | OH-MATH.MP.hs-algebra-2.8 |
| Make Sense of Problems Geometry | Students read a math problem carefully, figure out what it's actually asking, and keep working even when the path isn't obvious. They check whether their answer makes sense before calling it done. | OH-MATH.MP.hs-geometry.1 |
| Reason Quantitatively Geometry | Students connect the numbers and symbols in a geometry problem to real shapes, measurements, and situations. They move between the math on the page and the actual meaning behind it. | OH-MATH.MP.hs-geometry.2 |
| Construct Arguments Geometry | Students build a mathematical argument to support their answer, then explain why another student's reasoning is right or wrong. The focus is on using logic and evidence, not just arriving at a correct answer. | OH-MATH.MP.hs-geometry.3 |
| Model with Mathematics Geometry | Students use equations, graphs, or diagrams to represent a real-world situation, then check whether the math matches what's actually happening and adjust if it doesn't. | OH-MATH.MP.hs-geometry.4 |
| Use Tools Strategically Geometry | Students choose the right tool for the math at hand, such as a ruler, compass, calculator, or graph, and know when each one helps and when it gets in the way. | OH-MATH.MP.hs-geometry.5 |
| Attend to Precision Geometry | Students use exact math language and correct units when they explain their work. A length stays in centimeters, an angle stays in degrees, and the words they choose mean what they say. | OH-MATH.MP.hs-geometry.6 |
| Use Structure Geometry | Students learn to spot patterns and hidden structure in math problems, like recognizing that a complex shape is really just simpler pieces combined. That habit of looking beneath the surface makes solving new problems faster and more reliable. | OH-MATH.MP.hs-geometry.7 |
| Express Regularity Geometry | Students notice when the same steps keep showing up in a problem and use that pattern as a shortcut or rule. Instead of starting from scratch each time, they ask why the pattern works and write it down in a way they can reuse. | OH-MATH.MP.hs-geometry.8 |
Students write and solve equations and inequalities with one variable, then plot the results on a number line or coordinate plane. The goal is connecting the math to a real situation, like calculating how many hours of work it takes to reach a savings goal.
Students write two or more equations or inequalities together and find the value that satisfies all of them at once. This shows up in problems where two changing quantities, like cost and quantity, have to balance.
Quadratic functions describe curved relationships, like the path of a thrown ball or the area of a growing square. Students graph these curves, write their equations, and use them to make sense of real-world situations.
Exponential functions show how something multiplies or shrinks at a steady rate over time, like a bank balance earning interest or a population doubling. Students write the equation, read the graph, and decide whether the situation is growing or decaying.
Students add, subtract, and multiply expressions with variables and exponents, then read charts and graphs to spot patterns and draw conclusions from real data.
| Standard | Definition | Code |
|---|---|---|
| Linear Functions Algebra I | Students write and solve equations and inequalities with one variable, then plot the results on a number line or coordinate plane. The goal is connecting the math to a real situation, like calculating how many hours of work it takes to reach a savings goal. | OH-MATH.A1.hs-algebra-1.1 |
| Systems Algebra I | Students write two or more equations or inequalities together and find the value that satisfies all of them at once. This shows up in problems where two changing quantities, like cost and quantity, have to balance. | OH-MATH.A1.hs-algebra-1.2 |
| Quadratic Functions Algebra I | Quadratic functions describe curved relationships, like the path of a thrown ball or the area of a growing square. Students graph these curves, write their equations, and use them to make sense of real-world situations. | OH-MATH.A1.hs-algebra-1.3 |
| Exponential Functions Algebra I | Exponential functions show how something multiplies or shrinks at a steady rate over time, like a bank balance earning interest or a population doubling. Students write the equation, read the graph, and decide whether the situation is growing or decaying. | OH-MATH.A1.hs-algebra-1.4 |
| Polynomials and Statistics Algebra I | Students add, subtract, and multiply expressions with variables and exponents, then read charts and graphs to spot patterns and draw conclusions from real data. | OH-MATH.A1.hs-algebra-1.5 |
Students read graphs of curved and wave-shaped functions to identify key features like peaks, valleys, and where the graph crosses zero. This covers the main function families in Algebra II.
Students add, subtract, multiply, and divide polynomial and rational expressions, then solve the resulting equations. This is the algebra behind parabolas, interest rates, and any formula where variables appear in fractions or with exponents.
Students use sine and cosine functions to model real-world patterns that repeat, like sound waves, tides, or spinning wheels. They match the function to the pattern by adjusting its period, amplitude, and midline.
Students use data collected from a sample group to draw conclusions about a larger population. They decide what the data suggests and how confident they can be in that conclusion.
| Standard | Definition | Code |
|---|---|---|
| Functions and Graphs Algebra II | Students read graphs of curved and wave-shaped functions to identify key features like peaks, valleys, and where the graph crosses zero. This covers the main function families in Algebra II. | OH-MATH.A2.hs-algebra-2.1 |
| Polynomial and Rational Algebra II | Students add, subtract, multiply, and divide polynomial and rational expressions, then solve the resulting equations. This is the algebra behind parabolas, interest rates, and any formula where variables appear in fractions or with exponents. | OH-MATH.A2.hs-algebra-2.2 |
| Trigonometry Algebra II | Students use sine and cosine functions to model real-world patterns that repeat, like sound waves, tides, or spinning wheels. They match the function to the pattern by adjusting its period, amplitude, and midline. | OH-MATH.A2.hs-algebra-2.3 |
| Statistics and Probability Algebra II | Students use data collected from a sample group to draw conclusions about a larger population. They decide what the data suggests and how confident they can be in that conclusion. | OH-MATH.A2.hs-algebra-2.4 |
Students use flips, slides, and turns to show that two shapes are exactly the same size and same shape, then explain why that must be true using precise geometric reasoning.
Students use scale, angles, and side ratios to find unknown lengths and distances in triangles. This includes figuring out heights or distances that can't be measured directly.
Students use the rules connecting angles, arcs, and line segments inside or around a circle to solve geometry problems. This includes finding missing angle measures or lengths when chords, secants, or tangents intersect.
Students use x and y coordinates to prove geometric facts, like whether a shape has equal sides, right angles, or parallel lines, by calculating distances and slopes instead of just eyeballing the figure.
Students find the area, surface area, and volume of shapes like prisms, cylinders, and pyramids, then apply those calculations to solve real-world problems.
| Standard | Definition | Code |
|---|---|---|
| Congruence Geometry | Students use flips, slides, and turns to show that two shapes are exactly the same size and same shape, then explain why that must be true using precise geometric reasoning. | OH-MATH.GEO.hs-geometry.1 |
| Similarity and Trigonometry Geometry | Students use scale, angles, and side ratios to find unknown lengths and distances in triangles. This includes figuring out heights or distances that can't be measured directly. | OH-MATH.GEO.hs-geometry.2 |
| Circles Geometry | Students use the rules connecting angles, arcs, and line segments inside or around a circle to solve geometry problems. This includes finding missing angle measures or lengths when chords, secants, or tangents intersect. | OH-MATH.GEO.hs-geometry.3 |
| Coordinate Geometry Geometry | Students use x and y coordinates to prove geometric facts, like whether a shape has equal sides, right angles, or parallel lines, by calculating distances and slopes instead of just eyeballing the figure. | OH-MATH.GEO.hs-geometry.4 |
| Measurement and Modeling Geometry | Students find the area, surface area, and volume of shapes like prisms, cylinders, and pyramids, then apply those calculations to solve real-world problems. | OH-MATH.GEO.hs-geometry.5 |
Ohio funds the ACT or SAT (district choice) for all 11th-grade students as part of its accountability and college and career readiness measure.
Students move from arithmetic into working with letters that stand for numbers. They learn to solve equations, draw lines and curves on a graph, and use those graphs to answer real questions like how much something costs over time or when two prices will be equal.
Ask them to read the problem out loud and tell you what the letters stand for in plain words. Most stuck moments come from skipping that step. If they still can't start, have them try the problem with small whole numbers first to see the pattern.
Treat mistakes as normal and expected. Algebra rewards students who keep trying a second and third approach, not students who get it right the first time. Praise the effort to redo a problem rather than the speed of finishing it.
Start with linear equations and inequalities, since every later topic leans on them. Move into systems of equations, then quadratics, then exponentials. Save polynomial operations and data analysis for spots where they reinforce the function work, not as isolated units.
Solving equations with variables on both sides, graphing from a word problem, and the difference between linear and exponential growth. Factoring quadratics also tends to need a second pass later in the year once students have seen the graphs.
Pick a real number from the day, like a phone bill or a gas price, and ask what it would be after three months or five years. Sketch it on paper. That single habit builds the modeling skill that shows up in almost every unit.
A few, like the quadratic formula and slope, are worth memorizing. Most others are better understood than memorized. If students can explain why a formula works on a simple example, they can rebuild it on a test when memory fails.
By spring, students should solve a linear equation without prompting, graph a line and a parabola from an equation, and explain in words what a graph is showing. If those three things are solid, the next course will go smoothly.