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 ensu...
Number Sense
Genres
Grade
Ulmer Nest
🏠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...
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 st...
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 given am...
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, has found a marker for...
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 activ...
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 (as a class) in approximating, reasoning, and investiga...
Earth Day Actions for Our Planet (April 22)
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...
DST ends November 5th, 2023 - strange happenings
In this activity students try to figure out how time settings will change as they move from place to place and in the serious weirdness of Arizona and the Navaho and Hopi nations. What variables...
Leslie's Yummy Pumpkin Pie
Every year more and more people come to our house on Thanksgiving morning for my (Leslie's)famous pumpkin pie and a hike in the nearby woods. This year 23 people have already accepted. How man...