We are all about fun mathematics. Try these two puzzles. Send us your thoughts if you like via an email to navajomath@gmail.com.
Check back for more puzzles!
- Jim Storer has a remarkable on-line description of many puzzles. His website is Vast Puzzle Website. In case his site is down, check out his big book of puzzles Jim’s Big Puzzle Book
- Dissection Puzzles
- Pentominos
- (From our friend, @jamestanton):The number 21200 is self-describing: it has 2 zeros,1 one, 2 twos, 0 threes, and 0 fours. How many 5-digits numbers almost like this? How many are correct in 4 of the 5 digits?
- Can you plant exactly seven trees, so that there are exactly six rows, each containing exactly three trees?
- Is it possible to slice a cube with a straight plane to get a pentagon? Is it possible to slice a cube with a straight plane to get a regular pentagon? Is it possible to slice a cube with a straight plane to get a regular hexagon?
- The number \(2015!\) is a really large number. It is equal to $$1 \times 2 \times 3 \times \cdots \times 2014 \times 2015$$ How many zeros does it end with?
We have been making and distributing puzzles and math models. Here is a blog post about a set of Gears
Cole Parsons designed in consultation with Dave Auckly as part of a MathHappens internship.
Gear Story
We like people to view the material on our website. However, we can’t resist pointing out a couple of nice puzzle sites with many good ones. Check out https://krazydad.com/ and https://braineaser.com/.