### Primes Less than 100

Sporcle game here. Name all the primes less than 100 in 3 minutes.

Out of the Math Box!

Activities, Writings, and Videos by Debra K. Borkovitz

Sporcle game here. Name all the primes less than 100 in 3 minutes.

Practice with this Sporcle quiz — three minutes to count from one to twenty-five in base two. Let me know what you think. This is my first Sporcle Quiz ever.

I start this activity by handing out buckets of tiles (any small objects will do) and asking students to take 10. They can sort their ten tiles into any number of piles, and their “prize” is the product of the … Read More

Odd Perfect Squares

Pythagorean Card Table

Night Boat Photography

Explores some patterns in Pascal’s Triangle using Excel, including using conditional formatting to make a Sierpinski triangle. Excel Level: Beginning Plus (introduces conditional formatting). Math Level: Elementary – College.

Making a multiplication table is an excellent beginning Excel Activity. This video shows an efficient way to do it using absolute references, but there are many other approaches. I use an open-ended handout for this activity in class. This video … Read More