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National Donut Day (2 activities)

Algebra Geometry Food Current events Ratio and Proportion 3-act tasks
 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"...

Joe's Tiny New York

Number Sense Art
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

Sports Ratio and Proportion Probability and Statistics
 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

Number Sense Holidays
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

Number Sense Holidays
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)

Algebra Number Sense Holidays
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)

Social Studies Ratio and Proportion
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...

Hybrid, Electric or Gasoline

Algebra Number Sense Probability and Statistics
 Gas prices are up, EVs are everywhere, and hybrid technology keeps improving!So which car is better? Which car would you/your family choose? Students compare the latest prices (updated) of a hyb...

The Game of GO

Number Sense Social Studies
In March 2016, Lee Se-dol, one of the world's best Go players, and Google's artificial intelligence program "AlphaGo" had their first match. (Watch the incredible Documentary) Exactly 10 years la...

Rapunzel

Movies and Entertainment Ratio and Proportion
 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...
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