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The 8th billion baby
The 8th billion baby

How fast is the world's population growing? Will the world's population size increase indefinitely? Are all countries' populations increasing at the same rate? What are some of the...

Number Sense Math and Social Studies
Patterns in the binomial expansion, Pascal
Patterns in the binomial expansion, Pascal

Realizing that (X+Y)n can be expanded with the help of Pascal's Triangle offers some pretty and interesting math play. We love to bring a little fun and beauty...

Algebra Number Sense Grades 6–HS
Effects of new MLB rules
Effects of new MLB rules

This year new rules have been added to Major League Baseball. Pitchers and batters are no longer allowed to "dawdle" or delay the game. The bases are larger....

Algebra Number Sense Grades 4–6
Guacamole for Cinco de Mayo
Guacamole for Cinco de Mayo

Cinco de Mayo (May 5th) is an annual celebration of the 1862 Mexican victory over the French Empire at the Battle of Puebla. It has now evolved into...

Math and Food Holidays and Annual Events Grades 4–HS
New bust of King Charles ... in chocolate
New bust of King Charles ... in chocolate

Saturday, May 6 th 2023 will be King Charles' coronation. It's been a long time since a new monarch was crowned in the United Kingdom. The artists at...

Algebra Number Sense Grades 4–HS
Wheel of Theodorus
Wheel of Theodorus

Bring a little art into your math class as you begin to use the Pythagorean theorem and your students first meet irrational numbers. For Adventurer members we have...

Algebra Number Sense Grades 6–HS
Time to make your prom clothes ... with Duck Tape
Time to make your prom clothes ... with Duck Tape

Larissa Leon, from Texas, in her gorgeous Duck Tape prom gown. If you are going to make your prom clothes then you should start soon ... and buy...

Number Sense Math and Social Studies Grades 4–HS
How hard it is to pick the perfect bracket? (Updated)
How hard it is to pick the perfect bracket? (Updated)

Updated (2026)! Games have begun and there have been several upsets but March Madness won't be over until the finals on April 3rd and 4th. March Madness bracket...

Algebra Number Sense Grades 5–HS
March Madness - Does seeding really matter?
March Madness - Does seeding really matter?

March Madness, the big 68 team college basketball tournament, will now take over our TV viewing during the weekends of March. School and office friends are filling out...

Number Sense Sports Grades 5–6
How hard is it to find a 4 leaf clover? (3 Saint Patrick's Day activities)
How hard is it to find a 4 leaf clover? (3 Saint Patrick's Day activities)

Shamrocks in Ireland are actually 3-leafed white clover, trifolium repens . If you are lucky , you can sometimes find a four-leafed clover. How rare is finding a...

Algebra Number Sense Grades 2–HS
Just some March Madness math
Just some March Madness math

Today, March 12th, is selection Sunday. Tomorrow we'll know how the college basketball teams are seeded and bracketology can begin. Introduce your students to the meaning and excitement...

Algebra Number Sense Grades 2–HS
Daylight savings time
Daylight savings time

Updated and improved! Is Daylight savings time helpful? How does it make you feel? "Spring forward, fall back" Early Sunday morning, March 12 th at 2 am ,...

Algebra Number Sense Grades 4–HS