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Bye bye Antibiotic Chickens
Bye bye Antibiotic Chickens

🔔 Free Trial Alert! 🐔 Fast food chains like McDonald’s, Chick-fil-A, Panera Bread, Chipotle, and Whole Foods are moving toward removing antibiotics from the food we consume to...

Number Sense Math and Science Free sample
Holiday Movies
Holiday Movies

In this updated activity, students will explore box office data for top-grossing Christmas movies to analyze and compare earnings. They'll practice skills like rounding, estimating, calculating differences, and...

Number Sense Holidays and Annual Events Grades 3–6
Mathematical Gift Wrapping
Mathematical Gift Wrapping

🎁🎁In this updated activity, students will use math to explore two methods of wrapping gifts, including the mathematical method demonstrated by Sara Santos. They'll calculate the dimensions of...

Algebra Number Sense Grades 6–7
Stone Ice Storage
Stone Ice Storage

In this activity, students will estimate the volume of the Seokbinggo, a centuries-old stone structure, and compare it to the size of their home fridge. Through the activity,...

Number Sense Geometry Grades 4–6
The LEGO transit time
The LEGO transit time

In this updated activity, students will explore the math behind an unusual study: how long it takes to pass a LEGO head through a body? They'll calculate time...

Number Sense Math and Science Grades 3–6
The Scale of Things
The Scale of Things

🌎In this activity, students will explore the concept of size of different objects around us through estimation and scientific notation. Begin with the starter slides ( Teaching tips...

Number Sense Math and Science Grades 4–7
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
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
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
Germ-Killing Wipes
Germ-Killing Wipes

In this activity, students get to dig into the real impact of disinfectant wipes. With one wipe claiming to kill 99.9% of germs and another at 99.999%, does...

Math and Science Grades 4–6
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
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