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Big gulp
Big gulp

Do you or your students love sugary drinks? What if it were against the law to order a large sugary drink where you lived? On September 13th, 2012...

Algebra Number Sense Grades 5–7
Cruising
Cruising

There have been a lot of cruise ship mishaps and disasters this year. While these are in the news, let your students consider how these floating cities manage...

Algebra Number Sense Grades 4–7
Twinkies
Twinkies

Brian loves Twinkies and the news that Hostess is going out of business has upset him terribly. He needs his Twinkies. Twinkies last forever. Right? He's going to...

Number Sense Geometry Grades 4–6
Is this possible?
Is this possible?

Brian Shoemaker, a Newton, MA mathematics teache r, saw this Dunkin Donuts Mazda traveling down the road. He wondered if that size coffee cup could really have coffee...

Algebra Number Sense Grades 6–HS
What time is it in Cambodia?
What time is it in Cambodia?

I need help! My daughter is traveling in Cambodia and we are supposed to Skype just before her dinner time in Phnom Penh, Cambodia. What time is that...

Algebra Number Sense Grades 4–7
The tallest structure made of Legos
The tallest structure made of Legos

Act One: The world record for the tallest structure made of Legos was set in Seoul, South Korea. Check out this video on youtube! What other questions do...

Number Sense Math and Social Studies Grades 3–6
Storm cleanup
Storm cleanup

This activity could be used as an introduction to trig ratios. Students figure out the approximate length of the huge branch that I have to fell for safety...

Algebra Number Sense Grades 6–HS
Valentine's Cardioid
Valentine's Cardioid

WojciechSwiderski at the Polish language Wikipedia Happy Valentine's Day! This PDF contains four ways students can draw cardioids for Valentine's Day. There is no solution for this activity...

Geometry Holidays and Annual Events Grades 6–HS
Why Does it Stay in Orbit?
Why Does it Stay in Orbit?

Students will use their understanding of exponents and practice converting speed and distance from metrics to US customary units to complete this exercise ... and, they will learn...

Algebra Geometry Grades 7–HS
Chocolate Milk and Mixture
Chocolate Milk and Mixture

Image by Freepik Chemistry experiments and algebra problems sometimes ask students to create percent mixtures or to change a mixture into a stronger or weaker solution by adding...

Algebra Math and Food Grades 7–HS
Geometry of Flooding
Geometry of Flooding

In 2010, March was so rainy that flooding was the topic of every newscast and many, many conversations. To this day, the March 2010 floods were described as...

Number Sense Geometry Grades 4–HS