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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
Ghostly Measurements
Ghostly Measurements

In this activity, students will explore how to design a ghost costume 👻 👻 by reasoning through sheet dimensions, calculating the best fit for different heights, and interpreting...

Algebra Geometry Grades 5–HS
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
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
Sugary Record
Sugary Record

How big is the world's largest cotton candy sculpture? 🍭 Ali Spagnola set out to break the Guinness World Record with a massive cotton candy sculpture. Kick off...

Math and Food Grades 5–7
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
Happy National D🍩nut Day!
Happy National D🍩nut Day!

We have 2 activities to support this silly, but awesome holiday -- National Donut Day (June 5th) : How much have donuts changed? Students become familiar with the...

Math and Food Holidays and Annual Events
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