Children just press the equation buttons on our hands-on subtraction practice machine...and up pop the answers for instant reinforcement! This simple hands-on approach helps reinforce essential skills through self-directing, self-checking practice--at a pace that's just right. The 8 1/2" x 9 1/2" subtracting practice machine is made of sturdy plastic.
Children just press the equation buttons on our hands-on subtraction practice machine...and up pop the answers for instant reinforcement! This simple hands-on approach helps reinforce essential skills through self-directing,...
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