Pin Board Murders (patterns, angles, discussion)

Pin Board Murders (patterns, angles, discussion)

Solving murder mysteries have police making connections between underworld characters. Strings are pinned up between existing suspects. New subjects are pinned up.  It all looks like a big mess. But never fear! We are here to bring order to this chaos! Hopefully, our...
Number One! (fractions, primes)

Number One! (fractions, primes)

Number One! This challenge is for everyone out there who loves their team to be #1. It’s a great number! The number one is created using different positive integers in a fraction. The first time this is possible is when the maximum integer is six. Yippee! We...
Packing Pasta (estimate, measure, volume)

Packing Pasta (estimate, measure, volume)

Packing Pasta (MathPickle, 2019) This problem is good to introduce volume and density calculations to a classroom. Top students and those interested can continue to the greatest packing website in recreational mathematics: Erich’s Packing Center. The pages...
12 Days (addition, logic, factoring)

12 Days (addition, logic, factoring)

The brilliant artwork in this puzzle was done for me by Mr. Cuddington. Here is the challenge. You want to print up a card game with one card of value 1, two cards of value 2, three cards of value 3… twelve cards of value 12… Here is a page with 8 cards....