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What does 95% confidence in the poll results mean?
What does 95% confidence in the poll results mean?

There have been a lot of polls about who will win the Presidential election. I get so confused when polling results are reported. What is a 95% confidence...

Algebra Number Sense Grades 7–HS
Alarming ice cracks on Brunt Ice Sheet in Antarctica
Alarming ice cracks on Brunt Ice Sheet in Antarctica

A new, fast-growing ice crack is forcing the Halley VI British research station in Antarctica (shown above) to be moved. Fear of a huge break-off from the ice...

Algebra Number Sense Grades 5–HS
New baby giraffe
New baby giraffe

Willow at Baltimore, MD Zoo Willow weighed 125 pounds at birth and was 6 feet 1 inch tall. She will grow to her adult height of around 14...

Algebra Number Sense Grades 5–6
How did I graph this heart?
How did I graph this heart?

In this activity, students will use mathematical equations to create a heart shape on a coordinate plane. This activity encourages students to apply their algebra and graphing skills...

Algebra Geometry Grades 7–HS
Super Bowl cheesy pretzel poppers
Super Bowl cheesy pretzel poppers

Recipe courtesy of The Slow Roasted Italian A little more delicious work for the Super Bowl. Students follow a recipe that involves "cutting the cheese" block, figuring how...

Number Sense Geometry Grades 4–6
3 winners on the Price is Right - what are the chances?
3 winners on the Price is Right - what are the chances?

Act One: Show this clip of the Price is Right program. What questions do your students have? We were wondering what the chances are of 3 contestants in...

Algebra Number Sense Grades 6–HS
Cubs bury curse !
Cubs bury curse !

Wow! It's been a long time coming. The Chicago Cubs just won the World Series! The last time they won the World Series was in 1908 (For some...

Number Sense Sports Grades 3–7
Big Papi
Big Papi

What do you wonder? How many donuts make up this Big Papi tribute? What would be useful to help you figure this out? The following pictures that will...

Algebra Math and Food Grades 3–6
Are these really 70% off?
Are these really 70% off?

We ran into this sale online. Is that advertisement correct? Do they just want us to believe their math and not question what is really 70% off? Is...

Algebra Number Sense Grade 6
Pascal's Triangle coloring and Probability
Pascal's Triangle coloring and Probability

Pascal's Triangle and Probability - This activity could be used to explore the probability of coin tossing results. When the combinations get too complicated to list, students can...

Algebra Number Sense Grades 6–HS
Another year of Never Ending Pasta (Updated)
Another year of Never Ending Pasta (Updated)

Updated – 2025/2026 Olive Garden again offered a $100 pass for never-ending pasta! The 21,000 patrons who quickly (in less than a minute) bought all of the passes...

Algebra Number Sense Grades 3–5
Pokémon GO!  I should have invested
Pokémon GO! I should have invested

Pikachu Pokémon GO is all the rage. News reports show people glued to their smart phones as they travel to nearby landmarks where virtual critters appear and need...

Algebra Number Sense Grades 4–HS