Lego Fireman +
At the Toys R Us store, we saw an amazing LEGO creation. He was a life-sized LEGO fireman with a walkie-talkie, an oxygen tank and even an oxygen...
Number Sense
Genres
Grade
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 paper together.
Con...
The size of chocolates
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...
Wrapping presents on the diagonal
Dr. Sara Santos is a popular mathematician and speaker on mathematics. She has worked out a method for wrapping boxes (rectangular prisms) as efficiently as possible. (W...
Canstruction
Act One: Take a look at the pic. What questions come to mind?
Just before Thanksgiving there are competitions all over the world to celebrate cool design, tricky engineering, a...
Monster cake
Jodie Berman, a high school math teacher in Chicago, loves mathematics and loves to cook. We've created an activity based on her Monster Cake (composed ...
Shrinking Toblerone
New York Times photo - Credit Darren Staples/Reuters
They changed it. That is so not fair ... or is it? You can check out a video news story on the delicious shrinking Toblero...
How Many Donuts is That?
Number Sense
Geometry
Math and Food
Holidays and Annual Events
3-act tasks
Data and probability
Wow factor
Act One: Take a look at the first picture (Krispy-Kreme-photos). What is the first question that comes to mind? How many donuts is that? What information would be useful?
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