Times Tables Choice Board

http://nrich.maths.org/730   ABC Age 7 to 11 Challenge Level This task is a real challenge! You may like to try Trebling and All{...}

https://www.teacherspayteachers.com/Product/The-Product-Game-Created-by-NCTM-and-variations-of-Move-One-Games-6659193 Board Game found here.{...}

Introduce the problem to students: How many handshakes would there be if everyone in the classroom shook hands exactly once?{...}