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Happy Friday the 13th!
Happy Friday the 13th!

Don't worry, 13 is a Happy number! Students learn a new function and test whether a number is Happy or Sad.

Algebra Number Sense Grades 4–HS
Shooting for Three
Shooting for Three

The NBA court has a 3-point line that separates how many points a player will earn for his team by making a basket from outside of that line....

Algebra Geometry Grades 6–HS
Banana Art
Banana Art "Comedian"

What do you think this activity might be about? What do you wonder? How much would you pay for this piece of art? How much profit is involved...

Algebra Number Sense Grades 5–HS
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
April Fool's Day fun
April Fool's Day fun

This day is known for pranks and puzzles. Try one of these 4 activities on April Fools' Day. Ask students to analyze where I made my mistake. CCSS:...

Algebra Number Sense Grades 3–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
Crazy Twos (Two to the…s)
Crazy Twos (Two to the…s)

Let your students practice manipulating exponents. Multiplication, division, roots, powers of powers. This powerful activity asks them to do some impressive mathematics in their heads. We give students...

Algebra Number Sense Grades 6–HS
February 22, 2022
February 22, 2022

Why do you suppose we are posting this date as a topic for YummyMath? What do you think is so special about this date? Does this happen often?...

Algebra Number Sense Grades 2–5
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