Fast Growing Plant
Students look into a plant that doubles in height every month and work out a rule for its height at any point, then run that rule backwards to discover why a positive number raised to a negative...
Algebra
Genres
Grade
All you can eat for 10 cents
The history of the Dairy Queen franchise began with this ad in Illinois in 1938: All the ice cream that you can eat for only 10 cents! We know that 10 cents was worth more in the past, but was it...
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"...
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...
Hybrid, Electric or Gasoline
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 Last Great Race on Earth
The Iditarod Trail Sled Dog Race is an annual event in which mushers and teams of 12-16 dogs race across Alaska from Anchorage to Nome, in the cold and dark of March. It is also known as “The Las...
The Most Expensive 30 Seconds
This year, the 30-second Super Bowl ads will cost about 8 million dollars! Do you wonder how much one ad will cost next year? In 5 years? In 10 years? 🏈In this activity, students explore ho...
The huge costs behind the Olympics
Hosting the Olympic Games is extremely expensive. In this updated activity, students explore the cost of hosting the Olympics, what a cost overrun (percentage increase) means, and how actual Oly...
How steep is this treadmill?
Every year, even older students still get mixed up about horizontal and vertical slopes. Students do understand “rise over run,” but when it comes to horizontal and vertical slopes, things...
Fantasy Football (2025)
We're at the midway point of the 2025 NFL season! What a great time to connect math to sports!🏈In this activity, students use real statistics from recent games to calculate fantasy football poin...