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...
Speed Guess Fractions (estimate, division)

Speed Guess Fractions (estimate, division)

Speed Guess Fraction (MathPickle, 2019) This game works because the top students do not have time to figure out the right answer so everyone has a chance to win. Keep the selection phase ridiculously short at 20 seconds.  The game is a great way to increase student...
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...
Lazy Toad Puzzles (counting, symmetry)

Lazy Toad Puzzles (counting, symmetry)

If you have not seen the original jumping frogs puzzle you might want to watch the video below – paying special attention to the lazy toads. This exploration starts out with an exploration of lily pads linked together – but not necessarily in a line. The...