Math Is Fun Forum

My daughter (a former elementary teacher) just alerted me to this forum. I'm a retired rocketeer (Delta, Titan, Pershing, Polaris...) who is looking to become a secondary Math teacher (Undergrad at BYU in Mathematics - taught the Calculus and Business Math at universities). Thought this would be a good forum to find fun, challenging, and up to the minute helps for inspiring maths learning. Say what?

- Anon.