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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
Lots of Pieces
Lots of Pieces

🧩In this updated activity, students will explore estimation and addition with a collection of puzzles. It’s important to start with the starter slides, where students will use their...

Number Sense 3-act tasks Grades 1–4
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
Cookie Calculations
Cookie Calculations

In this activity, students will step into the kitchen to explore the math behind baking! 🍪 They’ll estimate costs, calculate how many cookies can be made with a...

Algebra Number Sense Grades 2–4
Candy Count: Which Bag Holds the Most Candy
Candy Count: Which Bag Holds the Most Candy

🎃Leverage your students' Halloween enthusiasm with this activity, where they’ll calculate the volume of various trick-or-treat bags—ranging from rectangular prisms to spheres, cylinders, and cones to discover which...

Number Sense Geometry High School
Chocolate Milk Account
Chocolate Milk Account

🔔 Free Trial Alert! In this activity, students will explore a school milk account where money is deposited and deducted as chocolate milk is purchased over time. But...

Algebra Number Sense Grades 5–HS Free sample
Money Making Movies
Money Making Movies

Do you enjoy watching movies?🎬 Have you ever wondered just how much money your favorite films make at the box office? Worldwide box office income is compared for...

Algebra Number Sense
Starbucks Sales and Nutrition
Starbucks Sales and Nutrition

Kick off the activity with starter slides that spark curiosity by asking students if they recognize the Starbucks logo and how many locations they think are in the...

Number Sense Math and Food Grades 5–HS
How much pee is in your pool (Updated)
How much pee is in your pool (Updated)

How much pee is in your pool? 🏊🏊 After chlorination, it has been hard to measure the quantity of pollutants in pool water. A Canadian chemist, Xing-Fang Li,...

Number Sense Geometry Grades 3–6
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
How much does America spend for Mother’s Day?
How much does America spend for Mother’s Day?

Updated in April 2026 with new data; see the answer key. How much do we spend on Mother's Day? Use the Mother's Day event to engage your students...

Number Sense Math and Social Studies Grades 3–6