National Donut Day (2 activities)
Friday, June 5th, is National Donut Day. We have 2 activities to support this silly holiday. How much have doughnuts changed? Students become familiar with the word "torus"...
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Joe's Tiny New York
Joe Macken is a truck driver from upstate New York. Back in 2004, when he was 41, he went into his basement with some balsa wood and started carving a tiny version of New York City, one building at a ...
NBA Finals 2026
Teams are competing in the playoffs, and the NBA Finals are right around the corner. Let's do a little sports history and data analysis through the context of NBA Finals math! T...
Memorial Day 2026
Memorial Day is a US holiday observed on the last Monday in May. Who are we honoring? How did the holiday come about? Isn't Memorial Day usually on May 30th? Students learn a little about the his...
Mother’s Day by the numbers
Mother’s Day is right around the corner, and that means big business for the greeting card, flower, and restaurant industries. In this activity, students calculate the average Mother's Day spendi...
Thank you, mother and father, for all of those diapers (Updated)
Which is a better deal, cloth or disposable diapers? How much did you cost your parents in diapers? In the future, how much could your kid's diapers cost? Help students realize all t...
Cost of light bulbs (Updated)
With incandescent and halogen bulbs banned since 2023, students compare CFL, LED, and Smart LED bulbs, calculate energy use in kilowatt-hours, and determine which bulb is the better deal over time.&nb...
Rapunzel
A live-action remake of Disney's Tangled is now in the works! In this updated activity, students use ratios and proportional reasoning to estimate the weight of Rapunzel's magical hair in the an...
Big Bucks (Updated)
In 2025, Cristiano Ronaldo signed a jaw-dropping 2-year deal worth over $710 million, making him the highest-paid athlete per year in sports history. In this updated activity, students will look at so...
Pixar vs DreamWorks
Animated films are a billion-dollar industry. The two biggest producers of animated films are DreamWorks and Pixar. The two have been going head-to-head for more than ten years now. ...