Geometry

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Chocolate heart-shaped raspberry cake

Geometry Math and Food Holidays and Annual Events Math and Art
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 changes with the increased pan size. &nbs...

Throwing Up 2023

Algebra Geometry Math and Science
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 pretty high. It's hard to shovel new snow when y...

How many feet of lights should I buy for my tree?

Algebra Number Sense Geometry Holidays and Annual Events 3-act tasks
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 you t...

Winter Solstice 2023

Number Sense Geometry Math and Science Ratio and Proportion
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 and the logic of da...

Do I have enough wrapping paper?

Algebra Number Sense Geometry Holidays and Annual Events 3-act tasks
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 paper together. Con...

Lots of Cranberries

Geometry Math and Food Holidays and Annual Events Ratio and Proportion
 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 Thanksgiving. In this activit...

Total lunar eclipse

Geometry Math and Science Current events Wow factor
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 be able to see the eclipse pretty close to when we woul...

The size of chocolates

Number Sense Geometry Math and Food Holidays and Annual Events
In this activity students assume that all of our pieces of chocolate are about the same thickness and proceed to approximate their volumes by comparing only their surface areas.  Consider sh...

How many gumballs are there?

Number Sense Geometry Math and Food Data and probability
Gumball Machine Problem from Brian Marks on Vimeo This problem is a little puzzle to get your students thinking, estimating, and calculating. We've given you a pdf file w...

Willy Makeit or Betty Wont

Number Sense Geometry Ratio and Proportion Funny Wow factor
I have to go to the bathroom pretty badly. I have to admit that I have been holding it in for a while.  Finally!  I see a bathroom sign!  Wait ... it is in kilometers?  How...
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