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 ...
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 U.S. Then, engage them in estimating...
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-Fa...
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 activ...
How much water do you have to drink? In this activity student develop formulas for calculating their water needs, learn about the effects of too lit...
We have 2 activities to support this silly, but awesome holiday -- National Donut Day (June 5th) :
How much have donuts changed?
Students become fam...
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 (as a class) in approximating, reasoning, and investiga...
We have 16 activities that you could use for Earth Day! April 22nd is Earth Day. Help your students become activists for our planet? We have 16 activities that...
Image by kjpargeter on Freepik It's a gorgeous ball, covered with Waterford Crystal triangles, shaped as a geodesic icosahedron. Every New Year's Eve it descends in Times Square to ma...