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Betsy Ross's 5-pointed star
Betsy Ross's 5-pointed star

Flag of the United States from 1777 to 1795. In honor of Independence Day we thought it would be fun to look at one story about the first...

Algebra Geometry Grades 4–HS
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
Does an NFL player's draft order mean a lot for the player?
Does an NFL player's draft order mean a lot for the player?

Updated! This Thursday, April 27 th , college football players will be awaiting knowing their futures in the NFL.Every spring, roughly 250 college football players are drafted by...

Algebra Sports Grades 5–HS
John Urschel, retired Baltimore Raven and Black mathematician
John Urschel, retired Baltimore Raven and Black mathematician

John Urschel is a young man with several seemingly disparate characteristics and talents. He is an athlete and a mathematician and he is a black man and a...

Number Sense Math and Social Studies Grades 2–HS
At least the days are getting longer
At least the days are getting longer

What's your guess? How fast are the number of daylight hours changing each day? Are the changes dramatic or subtle? Students make guesses; compute how long, on average,...

Algebra Number Sense Grades 4–7
Crazy basketball score
Crazy basketball score

Wow! Look at that score! There were some scoreboard malfunctions in this December 15, 2020, pre-season game. What might have been the final score if this game progressed...

Algebra Number Sense Grades 2–6
Holiday soda displays
Holiday soda displays

The holidays are coming! We found these timely soda displays made up entirely of 12-pack of Coca-Cola products. What questions do you have? Start out the activity by...

Algebra Number Sense Grades 2–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
2 Hiking Activities
2 Hiking Activities

How much food do you need to carry to hike the Appalacian Trail? The AT is a hiking trail that begins in Georgia and ends on Mount Katadin,...

Algebra Number Sense Grades 5–HS
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
It might be a good year to see the Perseid meteor shower
It might be a good year to see the Perseid meteor shower

Catching a productive meteor shower can be a stunning experience. On the evenings and mornings of August 11 th , 12 th and 13 th there could be...

Math and Science Holidays and Annual Events Grades 4–HS