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Square or Round - which pizza should I buy?
Square or Round - which pizza should I buy?

Warm up for π day with this updated activity! Subway has great Flatizzas but Sbarro's pizzas are good too. If that slice from Sbarro is from an 18-inch...

Algebra Number Sense Grades 3–6
Chocolate heart-shaped raspberry cake
Chocolate heart-shaped raspberry cake

For Valentine's Day, bake a cake! Students calculate base area or volume of cakes made from 2 cake pan sizes and observe how the volume of the cake...

Geometry Math and Food Grades 5–HS
Typical Super Bowl scores
Typical Super Bowl scores

Updated for 2023! In this activity students study historical Super Bowl data to reflect on average (mean, median, and mode), losing scores, winning scores, and range of scores....

Algebra Number Sense Grades 5–HS
Throwing Up
Throwing Up

This year, Buffalo, New York, has had more than 100 inches of snow this winter. We imagine that the height of the tunnel to people's homes is getting...

Algebra Geometry Grades 6–7
Big bucks 2023
Big bucks 2023

Updated! When soccer great, Lionel Messi played for Barcelona, he had one of the highest paid contracts of any athlete in the world. He had a $674 million...

Number Sense Sports Grades 5–7
How many feet of lights should I buy for my tree?
How many feet of lights should I buy for my tree?

Check out our Christmas Tree! We need to buy lights for the tree. Without calculating, guess how many feet of lights we will need. What information would help...

Algebra Number Sense Grades 5–HS
Winter Solstice 2023
Winter Solstice 2023

It is really dark out now. Why is that? Students appreciate how their latitude effects the darkness of their late afternoon location as they study the earth's tilt...

Number Sense Geometry Grades 5–HS
Do I have enough wrapping paper?
Do I have enough wrapping paper?

In this problem based activity students first guess and then try to calculate whether they will have enough paper to wrap this present without taping pieces of wrapping...

Algebra Number Sense Grades 5–HS
Lots of Cranberries
Lots of Cranberries

 The harvest must be nearing completion now and growers are selling their product to make cranberry juice, jelly, sauce, and of course, fresh berries in time for...

Geometry Math and Food Grades 4–7
Total lunar eclipse
Total lunar eclipse

On the morning of November 8, 2022, many of us will be able to see the last full lunar eclipse until March 2025. Luckily, many of us will...

Geometry Math and Science Grades 3–HS
How big could this mid-term election be?
How big could this mid-term election be?

Will the November 8 th 2022 election bring record number of voters to the polls? Students get a chance to understand what the usual percentage of voters is,...

Number Sense Math and Social Studies Grades 4–7
I need help raking my leaves
I need help raking my leaves

Brian has spent too much time thinking about his leaves. He's worried about raking them alone and thinking about how long the job would take if people helped....

Algebra Number Sense Grades 4–HS