Vampire Bats
🦇In this updated activity, students explore how vampire bats drink half their body weight in blood in just 20 minutes. Using proportional reasoning and unit ...
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A Parametric Heart
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In this updated activity, students will explore parametric equations to graph a heart shape using sine and cosine functions. Begin with the starter activity to set the stage (o...
Holiday Movies
In this updated activity, students will explore box office data for top-grossing Christmas movies to analyze and compare earnings. They'll practice skills like rounding, estimating, calculating di...
Mathematical Gift Wrapping
🎁🎁In this updated activity, students will use math to explore two methods of wrapping gifts, including the mathematical method demonstrated by S...
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...
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 con...
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 ...
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 fam...
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...
A geodesic icosahedron, the Times Square New Year's eve ball
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...