Multiplication Ninjas Organization?
If you don’t know what I’m talking about multiplication ninjas is a thing where kids earn colored wristbands rather than belts for mastering their multiplication tables. Heard about it from a colleague.
Thoughts on organization:
White belt: 0,1
Yellow: 5,10
Orange: 2,3
Green: 4,6
Blue: 7,8
Purple: 9,11
Red: 12
Black: All
This is how I view the difficulty (with possible exception to 11 not being hard) Would you suggest a different structure?