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National Donut Day (2 activities)
National Donut Day (2 activities)

Friday, June 5th, is National Donut Day . We have 2 activities to support this silly holiday. How much have doughnuts changed? Students become familiar with the word...

Algebra Geometry Grades 4–HS
Cost of light bulbs (Updated)
Cost of light bulbs (Updated)

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...

Math and Social Studies Ratio and Proportion Grades 5–7
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 Math and Social Studies Grade 7
Lunar New Year 2026
Lunar New Year 2026

The 2026 Lunar New Year falls on Tuesday, February 17. In this updated activity, students will explore the unique naming system of the Lunar New Year, which combines...

Number Sense Holidays and Annual Events Grades 3–6
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 5–7
Macy's Thanksgiving Parade (2025)
Macy's Thanksgiving Parade (2025)

🎈Get excited for Thanksgiving with this updated Macy’s Thanksgiving Day Parade activity! Students explore this year's parade map to find the number of parade blocks, use the map’s...

Number Sense Holidays and Annual Events Grades 3–6
Labor Day 2025
Labor Day 2025

In our usual Labor Day activity (updated for 2025), students will learn about the intended meaning of Labor Day and explore the patterns behind its historical dates. They...

Math and Social Studies Holidays and Annual Events Grades 5–7
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 Math and Social Studies Grade 2
Downside Up
Downside Up

🔍 In this updated activity, students will explore patterns and formulate mathematical relationships through the Canstruction exhibit ‘Downside Up.’ Begin with the starter slides for initial estimation attempts...

Algebra Number Sense Grades 6–HS
Ulmer Nest
Ulmer Nest

🏠In this activity, students will dive into estimation and critical thinking as they explore ‘Ulmer Nest’. It’s essential to start with the starter slides, where students will examine...

Number Sense Geometry Grades 3–6
Shrinkflation - Updated
Shrinkflation - Updated

📈💵In this updated activity, students will explore shrinkflation and its impact on the products we love. Building on our starter slides discussion, where we introduced the concept of...

Algebra Number Sense Grades 5–7
A Glass of Sweat
A Glass of Sweat

What is this machine for? Begin with the starter presentation slides to spark students' curiosity about the purpose of the machine. Then, engage them in the main activity...

Algebra Number Sense Grades 4–6