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Group 1 – 

Spread the cups out and have your students seated around them.
As quickly as they can they need to stack 6 random cups in a pyramid, then collapse the pyramid so they have a stack of 6 cups.  The first person to read the 6 digit number the stack makes, wins.  To get all participating and keep the motivation going, you can give the first person 2 points, and everyone else in the group that reads their number correctly 1 point.

 

Group 3

Create factor rainbows for 60, 72, 108, 144

Group 2 

(Mrs Joyce) Factor Rainbows

Group 4 –  https://nrich.maths.org/factorsandmultiples