Understand that a function from one set | A function is a rule that gives exactly one output for every input. Students learn to read f(x) as "the output when x goes in" and connect that rule to what a graph of the same equation looks like. | F.IF.1 |
Use function notation, evaluate functions for inputs in their domains | Students read and use function notation like f(x) to find an output when given an input, then explain what the result means in a real situation, such as what f(3) = 12 tells you about a problem. | F.IF.2 |
Recognize patterns in order to write functions whose domain is a subset of the… | Students identify a pattern in a sequence of numbers and write a rule that predicts any term in that sequence. The rule can be a straight-line or curved relationship, and the inputs are always whole numbers. | F.IF.3 |
For a function that models a relationship between two quantities, interpret key… | Given a graph or table that shows how two quantities relate, students identify where the graph crosses the axes, where it rises or falls, and what happens at its peaks, valleys, and edges. | F.IF.4 |
Relate the domain of a function to its graph and, where applicable, to the… | The domain is the set of inputs a function will accept. Students look at a graph or a real-world situation (like hours worked or ticket prices) and identify which input values make sense given the context. | F.IF.5 |
Calculate and interpret the average rate of change of a function | Students find how fast a value rises or falls over a stretch of time or distance, using a formula, a table of numbers, or a graph. That rate tells them whether something is speeding up, slowing down, or staying steady. | F.IF.6 |
Graph functions expressed symbolically and show key features of the graph, by… | Students graph equations by hand or with a calculator and label the key features: where the line crosses an axis, where it peaks or bottoms out, and how it behaves at the edges. | F.IF.7 |
Graph square root, cube root | Students graph square root, cube root, and exponential curves by hand or with technology, plotting key points and sketching the shape each equation produces. | F.IF.7.b |
Graph logarithmic functions, emphasizing the inverse relationship with… | Students graph logarithmic functions by hand and with technology, marking where the curve crosses the axes and describing what happens at each end. The work builds directly on exponential graphs, since a log function is its mirror image flipped across the line y = x. | F.IF.7.c |
Graph piecewise-defined functions, including step functions | Students graph functions that change rules at different points, such as a flat shipping rate that jumps at certain order sizes. Step functions are one example, where the output holds steady, then jumps to a new value. | F.IF.7.d |
Graph polynomial functions, identifying zeros when suitable factorizations are… | Students graph polynomial functions by hand or with technology, marking where the curve crosses zero and describing whether the ends of the graph rise or fall. | F.IF.7.e |
Graph rational functions, identifying zeros and asymptotes when suitable… | Students graph rational functions (fractions with polynomials on top and bottom), marking where the graph crosses zero and where it shoots toward a vertical or horizontal line it never quite reaches. | F.IF.7.f |
Graph trigonometric functions, showing period, midline | Students graph sine, cosine, and similar wave-shaped functions on a coordinate plane. They label how tall the wave gets, where the middle sits, and how long one full cycle takes. | F.IF.7.g |
Write a function in different but equivalent forms to reveal and explain… | Students rewrite the same function in different forms, such as factored or completed-square form, to spot useful details like the highest or lowest point of a graph or where it crosses zero. | F.IF.8 |
Use the process of factoring and completing the square in a quadratic function… | Factoring or completing the square on a quadratic equation reveals where the graph crosses zero, where it peaks or bottoms out, and where its line of symmetry falls. Students then explain what those points mean in a real situation. | F.IF.8.b |
Use the properties of exponents to interpret expressions for exponential… | Reading an exponential expression like 2^(0.1t) means recognizing what the base and exponent actually tell you. Students rewrite or analyze these expressions to explain the growth rate, starting value, or pattern a function describes. | F.IF.8.c |
Compare properties of two functions using a variety of representations | Students compare two functions side by side, whether they're written as equations, shown on a graph, listed in a table, or described in words, to spot differences in slope, intercepts, or other key features. | F.IF.9 |
Use functions to model real-world relationships | Students pick a situation from real life, like the cost of filling a gas tank or the height of a bouncing ball, and write a function that captures how one quantity changes as another changes. | F.BF.1 |
Determine an explicit expression , a recursive function | Given a real situation (a savings account, a bouncing ball, a growing pattern), students write a formula or step-by-step rule that describes what's happening mathematically. | F.BF.1.b |
| | Students combine two functions into one by plugging the output of the first function into the second. For example, if one rule converts miles to kilometers and another converts kilometers to steps, students build a single rule that goes straight from miles to steps. | F.BF.1.c |
Write arithmetic and geometric sequences and series both recursively and with… | Students write number patterns as both a step-by-step rule (each term based on the last) and a direct formula (any term from its position alone). They also match those formulas to real situations, like steady growth or repeated doubling. | F.BF.2 |
Transform parent functions | Students learn how shifting, stretching, or flipping a graph changes its equation. They practice spotting those changes on a graph and writing the algebra that matches. | F.BF.3 |
| | Students work backward from a function's output to find its input, then write that process as a new function. It's the math version of reversing directions to get back where you started. | F.BF.4 |
Write an expression for the inverse of a function | Given a function, students find the rule that reverses it. If the original turns 3 into 7, the inverse turns 7 back into 3. Students write that reverse rule as a new equation. | F.BF.4.a |
Read values of an inverse function from a graph or a table, given that the… | Given a graph or table of a function, students find the input that matches a given output, essentially reading the function backward. This is how inverse functions work in practice. | F.BF.4.b |
Verify by composition that one function is the inverse of another | Students check that two functions are inverses by plugging one into the other and confirming the result is just x. If f and g are true inverses, running a number through both functions in either order brings you back where you started. | F.BF.4.c |
Produce an invertible function from a non-invertible function by restricting… | A function that folds back on itself has no clean reverse. Students learn to trim the input range until the function does have one, making a clean two-way relationship possible. | F.BF.4.d |
Understand the inverse relationship between exponents and logarithms and use… | Exponents and logarithms are opposites of each other, the way multiplication and division are. Students use that relationship to solve equations where the unknown is in the exponent or buried inside a logarithm. | F.BF.5 |
Distinguish between situations that can be modeled with linear functions and… | Students learn to tell apart situations where something grows by a steady amount (like saving the same dollars each week) from situations where it grows by a steady percentage (like a bank account compounding interest). They pick the right type of equation for each. | F.LQE.1 |
Prove that linear functions grow by equal differences over equal intervals | Linear functions add the same amount each step. Exponential functions multiply by the same amount each step. Students prove why each pattern holds, not just observe it. | F.LQE.1.a |
Recognize situations in which one quantity changes at a constant rate per unit… | Students spot real-world situations where something grows or shrinks by the same amount at each step, like a salary that increases by the same number of dollars every year. | F.LQE.1.b |
Recognize situations in which a quantity grows or decays by a constant percent… | Students spot real-world situations where something grows or shrinks by the same percentage each period, like a savings account earning 5% interest every year or a car losing 15% of its value annually. | F.LQE.1.c |
Construct exponential functions, given a graph, a description of a relationship | Reading a graph or a table, students write the equation for a pattern that doubles, triples, or shrinks by a fixed percentage each step. The goal is moving from the picture or the numbers to the formula. | F.LQE.2 |
Understand radian measure of an angle as the length of the arc on the unit… | Radians are a way to measure angles using arc length instead of degrees. Students learn that one radian equals the length of the radius wrapped along a circle's edge, connecting angle size to the actual distance traveled around the circle. | F.TF.1 |
Explain how the unit circle in the coordinate plane enables the extension of… | The unit circle is a circle with radius 1 centered at the origin. Students use it to find sine and cosine values for any angle, not just the acute angles in a right triangle, by reading the coordinates where a rotating ray meets the circle. | F.TF.2 |
Use special triangles to determine geometrically the values of sine, cosine… | Students use the 30-60-90 and 45-45-90 triangles to find exact sine, cosine, and tangent values for key angles. Then they use the unit circle to see how those values shift when an angle is reflected or rotated. | F.TF.3 |
Use the unit circle to explain symmetry | The unit circle is a circle with radius 1 centered at the origin. Students use it to explain why sine and cosine repeat their values in a predictable cycle and why some trig functions mirror each other across an axis. | F.TF.4 |
Choose trigonometric functions to model periodic phenomena with specified… | Students pick a sine or cosine equation to match a repeating pattern, like ocean waves or a turning wheel, by adjusting how tall, how fast, and how centered the curve needs to be. | F.TF.5 |
Understand that restricting a trigonometric function to a domain on which it is… | To find the inverse of a sine or cosine function, students first limit the input values to a window where the curve only goes up or only goes down. That restriction makes it possible to reverse the function and solve for the angle. | F.TF.6 |
Use inverse functions to solve trigonometric equations that arise in modeling… | Students use inverse trig functions to work backward from a known ratio to find the missing angle in a real-world problem, like finding the angle of a ramp or a signal wave. A calculator helps check the answer against what the situation actually allows. | F.TF.7 |
Prove the Pythagorean identity sin² | Students use the relationship between sine and cosine to solve for a missing trig value when they know one angle ratio and which quarter of the coordinate plane the angle sits in. | F.TF.8 |
Prove the addition and subtraction formulas for sine, cosine | Students prove why sin(A+B), cos(A+B), and tan(A+B) work the way they do, then use those formulas to find exact values for angles that don't appear on a standard unit circle. | F.TF.9 |