Is 2024 a special number?
Image by dashu83 on Freepik
Students are introduced to some esoteric number categories as they check out the various descriptors of this year's date. What's a Harshad number? What's a...
Algebra
Genres
Grade
Indigenous Peoples or Columbus Day
When Columbus landed in Guanahani (renamed San Salvador, Bahama Islands by Columbus), he began the European settlement of the New World. Guanahani was inhabited by the
Taíno people and...
Will the Barbie movie out-perform Avatar at the box office?
The Barbie Movie is still doing well in the theaters. It has only been 6 1/2 weeks since its debut. Do you think that it can out-earn Avatar? Students study the numbers, recognize ...
Will I have enough stuff?
Thursday, Aug 10th, is National S'mores Day!
In my pantry I have one new box of Graham crackers, one bag of 6 full-sized Hershey bars, and one bag of marshmallows. Friends are meeting me at the b...
Wildfires and particulate matter
Wildfires in Canada have been spreading dangerous smoke pollution throughout much of North America. What is a dangerous size of particles per cubic meter (PM)? How tiny is th...
Summer Solstice, the longest day
Sunrise on summer solstice at Stonehenge
On Wednesday, June 21st, at 10:57 am EDT, the Earth's North Pole will be tilted as far towards the Sun as it will ever be in the ye...
Father's Day and Juneteenth; 3 Activities
Algebra
Number Sense
Math and Social Studies
Math and Food
Holidays and Annual Events
Current events
Ratio and Proportion
Data and probability
For Father's Day (Links to different activities)
Thank you Mother and Father for all of those diapers (2015) - Students compare the cost of buying disposable vers...
Earth's perihelion with the Sun
Today, Wednesday, January 4th, 2023, Earth will be as close as it gets to the Sun during its orbit. Shouldn't that make this the warmest time of the year?
In this activity students become fam...
Is 2023 a special number?
1998 was a Harshad year.
What do you notice about the number 2023?
What is a Harshad number?
Does 2023 meet the criteria?
Big deal? Rare? Often?
The Algebra of Magic Squares
Have you seen magic squares before?
How could a teacher use these puzzles to help students with different number skills?
How few blank cells could you leave?
Are there any special cel...