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Giant Pumpkins (2025)
Giant Pumpkins (2025)

🎃October is the time of year when giant pumpkin contests take place all over the world, and the pumpkins just keep getting bigger and bigger! In this activity,...

Number Sense Math and Food Grades 6–7
Starbucks Sales and Nutrition
Starbucks Sales and Nutrition

Kick off the activity with starter slides that spark curiosity by asking students if they recognize the Starbucks logo and how many locations they think are in the...

Number Sense Math and Food Grades 6–HS
Will I pay less if I buy more?
Will I pay less if I buy more?

image designed by macrovector / Freepik This activity can be used in a large range of grade levels. Your class can work on percents, linear equations or piecewise...

Algebra Number Sense
Justin Verlander's lunch bill
Justin Verlander's lunch bill

In the 2017 World Series, the Houston Astros beat the Los Angeles Dodgers and went on to play (and lose to) the Boston Red Sox in the finals....

Algebra Number Sense Grades 6–8
Jock tax 2023
Jock tax 2023

Great professional athletes make a lot of money. Did you know that professional athletes have to pay an amazing amount of federal, state, and sometimes even city tax?...

Algebra Number Sense Grades 6–HS
Doubling your money
Doubling your money

My friend and I were arguing about how long it would take me to double my investment amounts. How will your students figure this out? Are there any...

Algebra Number Sense Grades 7–HS
March Madness - Does seeding really matter?
March Madness - Does seeding really matter?

March Madness, the big 68 team college basketball tournament, will now take over our TV viewing during the weekends of March. School and office friends are filling out...

Number Sense Sports Grades 6–7
Two 12s or one 18?
Two 12s or one 18?

A little more pizza fun before Pi day ! Which should we order and why? Two 12-inch pizzas or one 18-inch pizza? Which will give you more pizza?...

Number Sense Geometry Grades 5–HS
I should have invested!
I should have invested!

People who have invested their money in the stock markets could have made a lot of money in recent years. Students use yearly percent increase data to decide...

Algebra Number Sense Grades 7–HS
Which sale would you rather use?
Which sale would you rather use?

In this short activity, students decide if these two sales are the same. If not, which is better? How would you explain this to someone?

Algebra Number Sense Grades 6–HS
Data remaining ... tricky
Data remaining ... tricky

I checked my data usage for the month. What do you notice and wonder (see the activity)? What could my data plan be? How much have I used?...

Algebra Number Sense Grades 8–HS
Which gasoline is the cheapest?
Which gasoline is the cheapest?

When Brian traveled to Crete last summer with his wife and son on an Archaeological dig, buying gasoline for his small rental car got him wondering again. He...

Algebra Number Sense Grades 6–HS