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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
Mashed Potatoes Proportions
Mashed Potatoes Proportions

🥔 "Why do we never have enough mashed potatoes at Thanksgiving?" In this updatedactivity, students will dive into the math of mashed potatoes planning to ensure there’s plenty...

Algebra Number Sense Grades 4–6
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
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
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