🏠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 student...
Are your favorite snacks secretly shrinking? Students compare the size and price of three popular snacks in 2022 versus 2026, calculating each item's unit price and percent change to uncover "shrinkfl...
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 ...
In this activity, students will explore a school milk account where money is deposited and deducted as chocolate milk is purchased over time. But first, start off with the engaging starter slides to ...
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 that tiny extra percentage ac...
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-Fang Li, has found a marker for...
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...
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...
This activity will be updated before October, 2026. Stay tuned!On Veterans Day we honor the men and women that have served in the Armed Forces of the United States. There are now 16.2 million li...