Resources for Grades 9–12

Video

grades 7–12

The Infinite Life of Pi

Learn all about this important ratio. What is pi? When was it discovered? And how can we use it?

Video

grades 6–12

What's Inside a Rubik's Cube?

Ever wonder how a Rubik's Cube works and functions? Take a look inside this tricky puzzle and see if you think you can solve it!

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bats

Worksheet

grades 6–12

Blood-Sucking Bats!

Use this downloadable worksheet to suck some math practice out of these fun facts about vampire bats.

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world's tallest building

Article/Ebook

grades 5–10

World's Tallest Building

Find out about the architecture, materials, and process used to create the world's tallest building. Then explore the math problems and social justice activities.

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transformations and symmetry

Lesson

grades 6–12

Transformations and Symmetry

Discover how symmetry can explain some of the most fundamental laws of nature.

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stone kites

Article/Ebook

grades 5–10

Stone Kites?

Learn about these mysterious stone structures in the western desert of Saudi Arabia. Then, try out some of the math questions.

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social distance dilemma

Worksheet

grades 6–12

Social-Distance Dilemma

Figure out how to hold a socially distanced patio party using math. Go back to the site to see whether you found the right answer.

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why can't you divide by zero

Video

grades 6–12

Why You Can't Divide By Zero

Learn how the simple combination of an everyday number and a basic operation can result in a mind-bending problem.

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goats that climb

Article/Ebook

grades 5–10

Goats That Climb

Find out how and why goats climb, and then choose one or more of the math questions to try. Check out the extra resources, too.

Video

grades 11–12

Finding the Volume of Any Shape

Find out how you can make use of calculus by figuring out the volume of 3D shapes with the help of this step-by-step tutorial.

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reindeer racing

Article/Ebook

grades 5–10

Reindeer Racing!

Read about the Sami people and how reindeer factor into their lives. Then choose some of the math problems, extensions, or worksheets to try.

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brew up some math

Article/Ebook

grades 5–10

Brew Up Some Math

Travel to Argentina to learn about the the cultural importance of yerba mate then do the math problems about this brewed beverage.

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a man sneezing

Activity

grades 7–9

Sneeze Graphs

Find out how far a sneeze travels in this video. Then grab an eye dropper, spray bottle, or water balloon and conduct your own test.

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Activity

grades 6–12

How Far Away is the Sun?

Use your hands and a mathematical ratio to estimate sizes and distances of far away objects. Start with objects close to you as a baseline.

Activity

grades 7–12

How to Make a Hexaflexagon: The Definitive Guide

Follow along with this video (and use the printable linked in the description) to do a fun, quick craft activity perfect for fidgety types. It also has some secret math in it.

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daily math problem

Activity

Preschool–grade 10

Daily Math Problem

At any time of day, use the daily math problem, presented at a variety of levels, to practice math skills and problem-solving.

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world's tallest building

Article/Ebook

grades 5–10

World's Tallest Building

Find out about the architecture, materials, and process used to create the world's tallest building. Then explore the math problems and social justice activities.

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stone kites

Article/Ebook

grades 5–10

Stone Kites?

Learn about these mysterious stone structures in the western desert of Saudi Arabia. Then, try out some of the math questions.

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goats that climb

Article/Ebook

grades 5–10

Goats That Climb

Find out how and why goats climb, and then choose one or more of the math questions to try. Check out the extra resources, too.

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reindeer racing

Article/Ebook

grades 5–10

Reindeer Racing!

Read about the Sami people and how reindeer factor into their lives. Then choose some of the math problems, extensions, or worksheets to try.

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brew up some math

Article/Ebook

grades 5–10

Brew Up Some Math

Travel to Argentina to learn about the the cultural importance of yerba mate then do the math problems about this brewed beverage.

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student using a tablet

Article/Ebook

grades 9–12

Cool Math Games for High School

Give students a chance to apply the skills they've learned, and let them have fun at the same time.

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Teacher in classroom with students using laptops

Article/Ebook

grades 6–12

9 Top YouTube Channels for Classroom Lessons

Find great videos to bring the world and all of its wonder to your students.

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Sample graph of spending habits

Interactive

grades 8–12

What's Going On in This Graph?

Check back each week to dig into a new fascinating graph connected to current events. What do you notice about it? What do you wonder?

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a child using a laptop

Interactive

grades 3–12

PhET Interactive Simulations

Illustrate difficult-to-understand concepts with this huge collection of excellent (and free!) science and math simulations.

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Interactive

grades 3–12

Game Coder

Explore some of the tutorials in Microsoft's MakeCode Arcade. These step-by-step guides show how to modify and create simple games using drag-and-drop code blocks.

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transformations and symmetry

Lesson

grades 6–12

Transformations and Symmetry

Discover how symmetry can explain some of the most fundamental laws of nature.

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sample algebra problem

Lesson

grades 6–12

All About Algebra

Work through these skills to learn about all things algebra.

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picture of a highway

Lesson

grades 6–12

Graph Theory

Discover how we're surrounded by networks and connections, from roads to the internet. Learn about how graph properties can solve pratical problems in this interactive.

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various math-related problems and items

Lesson

grades 9–12

Geometry Basics

Click on a video to learn, complete practice problems, or join in the conversation with questions. Master angles, polygons, and area in this foundational course.

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timeline of mathematics

Lesson

grades 6–12

Math History

Discover the history of mathematics with this timeline. Read the stories behind the math and see how what we know today evolved over time.

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a vegetable

Lesson

grades 6–12

Beautiful and Bizarre Math

Find out about fascinating fractals in this interactive. They're all around you! Create your own by repeating a simple pattern at an increasingly smaller scale.

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a key inserted inside a lock

Lesson

grades 10–12

Learning That Pays Off

Make sense of your dollars and cents in this course that offers practical advice about personal finance.

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sample graph

Lesson

grades 6–12

Statistically Relevant Studies

Discover all the components of a valid study in this mini-course. Learn what makes a relevant sample, the difference between correlation and causality, and more.

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Lesson

grades 9–12

POC Entrepreneurship

Calculate the percent change of POC-owned businesses from 2015 to 2016. Consider factors that could have influenced these changes. Ponder what business you could start!

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Lesson

grades 9–12

Census Calculations

Examine and compare histograms to understand characteristics of American life during a given time. Use mean, median, standard deviation, and more to interpret the data.

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Lesson

grades 1–12

Math Made Accessible

Read, watch, and solve math problems in algebra, geometry, statistics, calculus and trigonometry. Complete an activity, open a digital textbook, or try a practice problem.

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Lesson

grades 9–12

Pandemic Math

Do this timely activity (using the video, interactives, and questions) to understand the math behind viral outbreaks.

Video

grades 7–12

The Infinite Life of Pi

Learn all about this important ratio. What is pi? When was it discovered? And how can we use it?

Video

grades 6–12

What's Inside a Rubik's Cube?

Ever wonder how a Rubik's Cube works and functions? Take a look inside this tricky puzzle and see if you think you can solve it!

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why can't you divide by zero

Video

grades 6–12

Why You Can't Divide By Zero

Learn how the simple combination of an everyday number and a basic operation can result in a mind-bending problem.

Video

grades 11–12

Finding the Volume of Any Shape

Find out how you can make use of calculus by figuring out the volume of 3D shapes with the help of this step-by-step tutorial.

Video

grades 7–9

Transform Words into Numbers

Find out how to take a math problem that's in words and transform it into numbers called an expression.

Video

grades 6–12

Math Symbols + Explanation = Whoa!

Find out how symbols like the equal sign came to be and why we use so many unusual symbols in math equations.

Video

grades 8–12

What Is the Logistics Map?

Learn about the equation that connects a dripping faucet, a neuron firing, and the Mandelbrot set!

Video

grades 10–12

A Zombie Apocalypse and Calculus

Watch this video and explore how fast a (hypothetical) zombie population could grow. Calculate exponential growth to determine how long until a total takeover.

Video

grades 10–12

The Golden Ratio in Music

What's the golden ratio and how is it related to music? Listen to a team of musicians and mathematicians explain it here!

Video

grades 6–12

The Map of Computer Science

Take a journey through the history and development of computing in this brilliant visual mapping of the key concepts and fields within computer science.

Video

grades 10–12

Make Sense of the World with Statistics

Immerse yourself in the fascinating—and useful—field of statistics in this video-based course hosted by journalist Adriene Hill.

Video

grades 6–12

Find the Fun and Beauty in Algebra

Whether you struggle with algebra or already love it, join mathematician James Tanton on this nontraditional exploration of the foundations of algebra.

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STEM career path

Website/App

grades 3–12

Discover a STEM Career Path

Browse this site's videos featuring inspiring women discussing their work. Which careers seem most interesting to you? How might you pursue them?

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math lessons

Website/App

grades 6–12

Lots of Math Lessons

Watch these video lessons to explore all sorts of math concepts and get some extra instruction around especially tricky concepts.

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funny studying

Website/App

grades 6–12

Studying Has Never Been Funnier

Check out the "free stuff" for math, English, and more. As you learn, enjoy the sometimes sarcastic commentary about studying.

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math in various languages

Website/App

grades 3–12

Math in Three Languages

Choose a language -- English, Spanish, or Portuguese -- then click on a math concept to get some information. Explore other topics, too!

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Boy working on problem - Knowledge on the Go

Website/App

Preschool–grade 12

Great Minds: Knowledge on the Go

Build knowledge with these high-quality, daily instructional video lessons for ELA (grades K–8), math (grades K–12), and science (grades 3–5).

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a man hiking

Website/App

grades 1–12

CK-12 (For Students)

Choose a subject and specific topic to practice or learn some math, science, or social studies.

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screenshot from website

Website/App

grades K–12

Freckle

Practice core subject skills with pretests, worksheets, inquiry-based lessons, and benchmark assessments.

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Student studying

Website/App

grades 6–9

ELLevation

Help your ELL students continue to develop language and learn academic content, no matter the learning environment.

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Website/App

grades 6–12

Practice Proving Proofs

Boost your confidence in solving geometric proofs with this interactive. Click the "get started" button, then the "start learning" buttons to practice five proofs at home.

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Website/App

grades 6–12

Math Visualized

Plug in an equation and watch it transform on a graph. Expand your skills with videos and challenges, or even complete a scavenger hunt.

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Website/App

Preschool–grade 12

Independent Math

Choose the grade level that's right to get started.

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Website/App

grades 6–12

Interactive Math

Choose a course or activity that meets your needs from this beautifully designed reinvention of the traditional textbook.

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bats

Worksheet

grades 6–12

Blood-Sucking Bats!

Use this downloadable worksheet to suck some math practice out of these fun facts about vampire bats.

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social distance dilemma

Worksheet

grades 6–12

Social-Distance Dilemma

Figure out how to hold a socially distanced patio party using math. Go back to the site to see whether you found the right answer.

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mystery numbers

Worksheet

grades 6–12

Mystery Numbers

Figure out the numbers each symbol represents by using the clues. Don't check the key until you've figured out your answers!