Category: Geometry

4th of July

Hot dog eating; Flag art; Fireworks on your calculator; Creating a 5-pointed star with one cut; and a possible new, 52-star flag.

At last, its summer again

How much pee is in this pool? – A Canadian chemist, Xing-Fang Li, has found a marker for urine that chlorine doesn’t disguise. In this activity, students calculate volume of several pools, change that cubic foot volume to gallons of pool water,…

Shooting for Three

The NBA court has a 3-point line that separates how many points a player will earn for his team by making a basket from outside of that line. Teams have been shooting more and more three’s, but should they be and why?

Mother’s Day 2022 (14 ideas)

We have 14 possible activities for you to bring Mother’s Day into your classroom. Diapers, chocolate, Mother’s Day spending, surprise breakfast, and more …

Earth Day 2022

We have 16 interesting activities to bring home; air quality, erosion, water levels, climate change, solar power, recycling, and changes to our Earth. Use the moment.

How big of a crepe can you make?

At Costco you can buy this huge tub of nutella.  It contains nearly 7 pounds of chocolaty-hazelnut spread. We use nutella to make banana/nutella crepes.  How long will that tub last us?  Is it too big and we will have…

April Fool’s Day fun

Try one of these 4 activities on April Fools Day. Where did that extra dollar go? Mystical Mathematical Mind Reader; perplexing missing square in the triangle; and Robert Kaplinsky’s foil prank.

Spring is here (5 activities)

To celebrate spring, we’ve shown our fractal tree coming to leaf and created in Python to see what students can figure out about the instructions of the computer language. More March Madness activities are included. An Excel activity on counting backwards to figure out planting dates. And, a reminder of tick time and the growth of Lyme disease.

3 Saint Patrick’s Day activities

Are finding four-leafed clovers really hard to do? How much dye does it take to turn the Chicago River green? If you were keeping track of your food intake, how much would a Shamrock Shake cost you?

Winter Olympic Activities (7 activities)

Curling – Friction, score-keeping, trajectory and weirdness are the main concepts in this activity.  Curling is not a well-understood sport but the science and strategy are easily understood and enjoyed. Big Air Snowboarding – Some of your students may be officianados…

10 Super Bowl activities

Typical Super Bowl scores – Just updated for 2022  Students reflect on the mean, median, and mode losing scores, winning scores, and range of scores from past Super Bowls as they try to predict this year’s scores. They decide how the…