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Tree for Springtime
Tree for Springtime

Here in the Northeast, flowers are blooming and trees are leafing out. We thought the creation of a tree that grows before your eyes might be akin to...

Algebra Geometry Grades 3–HS
Can I get your order right?
Can I get your order right?

You can order a ton of combos at Chipotle. They advertise that there are 65,000 ways to order their meals. Do you think that is correct? Here's an...

Algebra Math and Food Grades 6–HS
Shoprite's solar energy goals on the African continent
Shoprite's solar energy goals on the African continent

Shoprite is the largest supermarket chain in Africa. The company is presently engaged in increasing their use of solar power to harness the abundant natural resource of solar...

Algebra Geometry Grades 3–6
Will our U.S. flag change yet again?
Will our U.S. flag change yet again?

How many stripes are in our present flag? (The bottom right flag that has been in use since 1960; See the PowerPoint) How many stars? What do the...

Algebra Geometry Grades 2–5
Dunkin's Go2s
Dunkin's Go2s

Last year, Dunkin Donuts offered a great deal for getting two breakfast sandwiches at a pretty low cost. Check out their poster for the sandwich costs and pictures....

Algebra Number Sense Grades 5–HS
How should I spend my rewards?
How should I spend my rewards?

There's a new way to earn rewards at many grocery stores. For every dollar that you spend, you accumulate points. Then there are special rewards where you earn...

Algebra Number Sense Grades 4–7
Inauguration Date
Inauguration Date

The date of the Presidential Inauguration this year can be written in an interesting way. What do you notice? What do you wonder? Do you think that this...

Algebra Number Sense Grades 3–HS
December 21, 2020 - Great conjunction
December 21, 2020 - Great conjunction

Right now, just after sunset, in the southwest sky, you can check out the planets of Jupiter and Saturn as they get closer and closer to each other....

Algebra Number Sense Grades 3–HS
Ravensburger huge puzzle
Ravensburger huge puzzle

 This puzzle is gorgeous and HUGE! Ravensburger says that if you spent 2 hours every day putting this puzzle together it would take you a year to...

Number Sense Geometry Grades 3–7
Candy deals
Candy deals

We found big mixed bags of candy at really good prices ... we think. Students are asked to decide which would be the best deal and the worst...

Number Sense Math and Food Grades 4–6
Monster cake
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 of everything that...

Number Sense Geometry Grades 3–6
How much chocolate is left?
How much chocolate is left?

In this short activity, students reason and calculate what is left of these chocolate bars. The bars are the same size but are molded into different numbers of...

Algebra Number Sense Grades 3–5