Population Clock
How in the world does this clock conclude that there is a net gain in the United States of one person every 14 seconds?
Have a little care about younger children when using this activity. T...
Number Sense
Genres
Grade
Layla's antibiotics
Layla
The dosage of Layla's medication was confusing to our friend Kim. How many days was she supposed to give Layla the meds?
How many pills does she need to cut into pie...
How much does the biggest Lego set ever cost?
Picture from the Verge. Click to see the story.
Note: This is a remake of our 2014 "How Much Does a Lego Cost" activity
How much could the...
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 video version of our power point for the activity, whic...
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 cost? What is that per mile? Per foo...
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 project.
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 must be.
Then we've...
Giant iceberg
Ferryland, Newfoundland. JODY MARTIN / REUTERS
Over the past Easter weekend this giant iceberg drifted passed Ferryland, Newfoundland. Its hard to tell how large it actually is but...
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? How many nuggets do you guess are in tha...
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 for Holiday gatherings.