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How big of a crepe can you make?
How big of a crepe can you make?

At Costco you can buy this huge tub of n utella . It contains nearly 7 pounds of chocolaty-hazelnut spread. We use n utella to make banana/n utella...

Algebra Number Sense Grades 4–7
Mental math tricks - part 2
Mental math tricks - part 2

36 x 25 = 900 480 x 25 =12,000 924 x 2.5 = 2,310 Can you see any tricks for doing these calculations in your head? An editable...

Algebra Number Sense Grades 4–HS
What is my best gasoline option?
What is my best gasoline option?

Jason Kibbe, 6-8 Gifted Support Teacher in Chambersburg, PA, sent us this timely investigation. Should I pay the membership fee and get BJ's gasoline? Should I just buy...

Algebra Number Sense Grades 5–HS
Shrinkflation
Shrinkflation

Shrinkflation! What do you think this word means? Inflation in the cost of living (2021) was estimated to be about a 7% rise. If "shrinkflation" is happening at...

Algebra Number Sense Grades 5–7
Mardi Gras, 2023
Mardi Gras, 2023

Updated for 2023! Tuesday, February 21, 2023, will be the day before Ash Wednesday and the start of the season of Lent. Mardi Gras is a last hoorah...

Algebra Number Sense Grades 4–6
The LUGE
The LUGE

This is one of the fastest Olympic sports. Lugers, on tiny sleds, zoom down a solid ice track at fantastic speeds, hold their bodies in an aerodynamically optimized...

Algebra Number Sense Grades 5–HS
Spider-Man continues
Spider-Man continues

Spider-Man: No Way Home opened on December 17, 2021 . How much did it cost to make? How much will it gross? Is the Spider-Man phenomena a guarantee...

Number Sense Ratio and Proportion Grades 3–HS
Home team advantage?
Home team advantage?

Updated! Even before your students check out the graphic below, ask them whether they think a game played at home gives their team an advantage. If so, how...

Algebra Number Sense Grades 5–6
The James Webb telescope
The James Webb telescope

 After launch, the telescope deployed on its 30-day, million-mile journey out to the second Lagrange point (L2). This video shows the deployment procedure, timeline, and location of...

Algebra Number Sense
Will one roll be enough?
Will one roll be enough?

Students can use the man or the basket as a reference as they try to approximate the size of these gifts and how much wrapping paper will actually...

Number Sense Geometry Grades 4–6
2 New Macy's Parade balloons
2 New Macy's Parade balloons

As the Macy's Parade returns to public viewing, here are two balloons that Macy's artists have added. Can you figure out their dimensions? Macy's give their dimensions in...

Algebra Number Sense Grades 4–HS
Shopping season already!
Shopping season already!

We used to see holiday sales right after Thanksgiving but, surprisingly, holiday shopping has already begun. Sales are advertised everywhere. Students will be able to add some understanding...

Number Sense Math and Social Studies Grades 4–7