1

Closed

add subset drills

description

drill one number at a time until mastered - {3x1=3,3x2=6,3x3=9,...}, {4x1=4,4x2=8,...4x9=36}, etc..
drill matches together {4x8=32, 8x4=32, 5x8=40, 8x5=40, etc}
Closed Apr 20, 2010 at 6:36 AM by ejarvi
working in beta build

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