Activity
NASA

Collecting Light: Inverse Square Law Demo

For Teachers 6th - 12th
Light, distance, and mathematics come together to help scientists plan for space missions. Groups examine the relationship between distance from the sun and light availability in a hands-on exploration activity. They model the inverse...
Activity4:07
PBS

Scale City — Inverse Proportions and Shadows in the Real World

For Teachers 6th - 7th Standards
Bring the resource out from the shadows. Viewers of a short video learn about drive-in theaters and how operators project images onto a large screen. They then perform an experiment to determine the relationship between the distance of...
Lesson Plan
Curated OER

Your Father

For Teachers 9th - 12th Standards
Your learners will explore the idea that not all functions have real numbers as domain and range values as seen in this real-life context. Secondly, the characteristics required for a function to have an inverse are explored including...
Activity
Exploratorium

Oil Spot Photometer

For Teachers 6th - 12th
Are these two light sources the same? Groups use a white card and a little cooking oil to create a photometer that allows for the comparison of two lights. The Inverse Square Law provides a way to calculate the actual difference in...
Activity
Illustrative Mathematics

Exponentials and Logarithms II

For Teachers 8th - 12th Standards
Learners are given a logarithmic function and its inverse exponential function. The task, which is to graph both compositions of the two functions, uses the inverse nature of exponents and logarithms to generalize about the properties of...
Lesson Plan
Illustrative Mathematics

How Many Marbles?

For Teachers 4th - 6th Standards
Don't lose your marbles! This simple story problem helps make teaching division with fractions much easier. Work on this problem along with the lesson titled, How Many Servings of Oatmeal? to highlight the difference between...
Lesson Plan
Curated OER

Parabolas and Inverse Functions

For Teachers 9th - 12th Standards
Your Algebra learners will explore what equations are functions or not functions and how to alter the domain to produce a possibility for the relations being a function with a limitted domain.
Activity
Illustrative Mathematics

Temperatures in degrees Fahrenheit and Celsius

For Teachers 8th - 12th Standards
Learners investigate the relationship between the Fahrenheit and Celsius temperature scales. Given two data points, they construct a linear function to describe the relationship, find the inverse of the function, and make observations...
Lesson Plan
Curated OER

Triangles Inscribed in a Circle

For Teachers 9th - 12th Standards
Are you tired of answers without understanding? Learners can give a correct response, but do they really understand the concept? Have young mathematicians think deeper about linear functions, angles, and formulas in algebra....
Activity
West Contra Costa Unified School District

Division (No Remainders)

For Teachers 4th - 7th Standards
Help young mathematicians build a solid understanding of division with this base ten block activity. With the help of these popular math manipulatives, children model different math problems in order to reinforce the...
Activity
AAA Math

Aaa Math: Inverse Relationship Between Multiplication & Division

For Students 9th - 10th Standards
Use the interactive problems in this lesson to practice the inverse relationship between multiplication and division. This is a good tutorial to review before learning how to solve basic equations.
Activity
AAA Math

Aaa Math: Inverse Relationship of Addition & Subtraction

For Students 9th - 10th Standards
There is a great interactive problem set for students to practice the concept of the inverse property. This would be a great review before a unit on solving basic equations.
Activity
Texas Instruments

Texas Instruments: The Inverse Relationship Between Pressure and Volume

For Teachers 9th - 10th
In this activity, students' will use a pressure sensor to investigate the relationship between pressure and volume for an enclosed air sample, and fit an inverse function model to the pressure versus volume data.
Activity
AAA Math

Aaa Math: Inverse Relationship of Subtraction and Addition

For Students K - 1st Standards
Students explore the inverse relationship of addition and subtraction. The resource provides self-check exercises and timed learning games to practice the concept.
Activity
AAA Math

Aaa Math: Inverse Relationship: Multiplication & Division

For Students 3rd - 8th Standards
This site explains the inverse relationship of division with multiplication. Gives problems and games to practice this skill in a fun and helpful way.
Activity
Purple Math

Purplemath: Logarithms: Introduction to "The Relationship"

For Students 9th - 10th Standards
Purplemath does a wonderful job of explaining logarithms. The lesson begins with a discussion of the relationship between logarithms and exponentials and very simple examples. The lesson gives important information regarding logarithms...
Activity
AAA Math

Aaa Math: Inverse Relationship of Addition and Subtraction

For Students Pre-K - 1st Standards
This site introduces addition and subtraction fact families and provides an opportunity for students to practice the skill.
Activity
Beacon Learning Center

Beacon Learning Center: Checking Subtraction

For Students Pre-K - 1st Standards
Students can explore the inverse relationship of addition and subtraction in this interactive web lesson.
Activity
Maths Challenge

Maths challenge.net: Alley Ladders

For Students 9th - 10th Standards
This is a "three star" geometry problem where prior math problem skills and proof experience is recommended to solve this relationship between the inverses of heights.
Activity
Texas Instruments

Texas Instruments: Geometric Representation of Trig Functions

For Teachers 9th - 10th Standards
Using similar triangles, a relationship is established between the six trigonometric functions of an angle and simple line segments. These relationships are then confirmed using line segment measurement capabilities of the graphing...
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Graphing Calculator Practice Problems: Proportions

For Students 9th - 10th Standards
Practice using your graphing calculator for solving proportion problems. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each problem.
Activity
NumberNut

Number Nut: Comparing Operations

For Students 3rd - 5th Standards
Combine all of your knowledge about the four basic operations in this lesson that focuses on comparing operations. Discover the relationship between of each operation and key vocabulary terms to build your number sense.
Activity
University of Illinois

University of Illinois: Quadratic Formula

For Students 9th - 10th
This site from the University of Illinois offers an excellent simulation of the quadratic formula, where you can type in different values for a, b, and c, and then view the change in the answer for x.
Activity
Texas Instruments

Texas Instruments: Numb3 Rs: Magnetism

For Teachers 9th - 10th
Based off of the hit television show NUMB3RS, this lesson, designed for upper-level high school students, has students linearize the data describing the force of a magnet at various distances. While it is assumed students already know...

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