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Tooth Fairy
Tooth Fairy

Ask students to think back to when they were losing their baby teeth. Did the Tooth Fairy visit? Were you paid well, or were you disappointed? The average...

Number Sense Social Studies Grades 4–6
Spider-Man Profitability
Spider-Man Profitability

The latest Spider-Man movie , Brand New Day, opened on July 31, 2026, with the biggest opening weekend of all time! How much did it cost to make?...

Number Sense Ratio and Proportion Grades 7–HS
Population Clock
Population Clock

How in the world does this clock conclude that there is a net gain in the United States of one person every 29 seconds? Students use fraction operations...

Algebra Number Sense Grades 5–8
Back to School Costs
Back to School Costs

Back-to-school spending is huge, and students might not appreciate what it costs to send them back to, essentially, their job of learning. In this activity, students decide what...

Number Sense Social Studies Grades 6–HS
Video Game Consoles
Video Game Consoles

The video game world is constantly changing and improving. With the fairly new products like the PlayStation 5 and the Xbox Series X, we wondered what are the...

Movies and Entertainment Probability and Statistics Grades 5–7
Joe's Tiny New York
Joe's Tiny New York

Joe Macken is a truck driver from upstate New York. Back in 2004, when he was 41, he went into his basement with some balsa wood and started...

Number Sense Math and Art Grades 4–6
Cost of light bulbs
Cost of light bulbs

With incandescent and halogen bulbs banned since 2023, students compare CFL, LED, and Smart LED bulbs, calculate energy use in kilowatt-hours, and determine which bulb is the better...

Social Studies Ratio and Proportion Grades 6–8
The Game of GO
The Game of GO

In March 2016, Lee Se-dol, one of the world's best Go players, and Google's artificial intelligence program "AlphaGo" had their first match. (Watch the incredible Documentary ) Exactly...

Number Sense Social Studies Grade 8
Big Bucks
Big Bucks

In 2025, Cristiano Ronaldo signed a jaw-dropping 2-year deal worth over $710 million, making him the highest-paid athlete per year in sports history. In this updated activity, students...

Sports Ratio and Proportion Grades 6–7
The huge costs behind the Olympics
The huge costs behind the Olympics

Hosting the Olympic Games is extremely expensive. In this updated activity, students explore the cost of hosting the Olympics, what a cost overrun (percentage increase) means, and how...

Algebra Math and Social Studies Grades 6–8
Labor Day
Labor Day

In our usual Labor Day activity (updated for 2026), students will learn about the intended meaning of Labor Day and explore the patterns behind its historical dates. They...

Social Studies Holidays Grades 6–8
A lot of Cars
A lot of Cars

🚙 In this updated activity , students will explore the environmental impact of transportation choices. They will use division to calculate how different transportation choices reduce the number...

Number Sense Social Studies Grade 3