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Drinks at the Fair
Drinks at the Fair

At the amusement park, our friend, Jason, was intrigued with this sign for drink deals. He and his family come often to the park and, during the summer...

Algebra Food Grades 6–HS
How many cars are there?
How many cars are there?

Brian came home from work to find that his son had his toy cars organized in a tight parking lot on our front porch. ? Below is a...

Number Sense Geometry Grades 2–4
Proposed southern border wall
Proposed southern border wall

You have probably heard about the proposed border wall that may go up along the U.S./Mexico border. How much wall needs to be built? How much will that...

Number Sense Math and Social Studies Grades 4–6
A gorgeous, glittery card
A gorgeous, glittery card

Uh oh! How do you find the area of a heart? Get your students to help you calculate how many sequins you'll need to order for this class...

Number Sense Geometry Grades 2–7
Measuring sea level
Measuring sea level

What does this gizmo do? We've given students a diagram of what the interior of this mechanism contains and asked them to try to decide what its purpose...

Algebra Number Sense Grades 5–HS
Giant iceberg
Giant iceberg

Ferryland, Newfoundland. JODY MARTIN / REUTERS This giant iceberg drifted past Ferryland, Newfoundland in 2017. It's hard to tell how large it actually is, but it looks huge....

Number Sense Geometry Grades 4–HS
Chicken to share
Chicken to share

How many pieces does each person get when $10 is supposed to feed two people? Which would you buy and how much is each piece of your choice?...

Number Sense Math and Food Grades 4–6
April's calf was born!
April's calf was born!

At about 10:00 am, April 15th, April's calf was born. Everyone will be talking about it and smiling constantly. Here's some fun math stuff to bring with you...

Algebra Number Sense Grades 4–7
Patriots' Day
Patriots' Day

We celebrate Patriots' Day to commemorate the beginning of the Revolutionary War and the battles of Lexington and Concord. Students learn more about the difficulties of the Revolutionary...

Number Sense Math and Social Studies Grades 4–7
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