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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
Is the Electoral College fair?
Is the Electoral College fair?

Show your students this really cute segment comparing how the Electoral College functions in our elections to what students think is fair and just. From the New York...

Number Sense Math and Social Studies Grades 5–HS
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
Can you show that the Pythagorean Theorem works?
Can you show that the Pythagorean Theorem works?

Use this activity to help your students work through the meaning of the Pythagorean theorem. Pythagorean theorem experiences are often skill and drill work with contrived right triangle...

Algebra Number Sense Grades 5–HS
USPS needs help!
USPS needs help!

The U.S. Postal Service has been in the news lately. Does it seem like your mail takes longer to reach where you have sent it now? Do you...

Algebra Number Sense Grades 4–HS
Ramen noodle heist
Ramen noodle heist

In 2018, a truck trailer was stolen from a parking lot in Georgia. The trailer was filled with Ramen noodle packages and its contents were valued at $98,000....

Number Sense Geometry Grades 3–6
Do you want to be an NBA virtual fan?
Do you want to be an NBA virtual fan?

For health concerns, professional sports now have no actual live fans. To help generate the excitement and semblance of fans, some teams use cardboard cutouts of people. Some...

Number Sense Geometry Grades 2–5
How big is this hornet really?
How big is this hornet really?

Egad !!!! Giant Asian hornets have now migrated to Washington state and British Columbia. Even though they are sometimes called "murder hornets" their stings aren't fatal. Their stings...

Number Sense Geometry Grades 3–6
String design, ellipses, and orbital mechanics
String design, ellipses, and orbital mechanics

Here's a different and somewhat artistic way to encourage understanding of a conic section. Participants physically build an ellipse by choosing two foci and sketching the figure through...

Number Sense Geometry Grades 6–HS
Coronavirus trends
Coronavirus trends

Johns Hopkins University of Medicine has a team that maintains current maps and data about the Coronavirus. They record changes and show trends of the virus activity throughout...

Algebra Math and Science Grades 6–HS
I bought toilet paper online
I bought toilet paper online

We needed more toilet paper at home but there wasn't any at the store. So, I ordered this online. When it came I was surprised. Read on ...

Algebra Number Sense Grades 4–7