Use as basic flash cards or add the Hot Dots pen for instant reinforcement?just touch the pen to the correct answer to get a positive response. Set includes 50 double-sided cards for 100 interactive math problems.
Subtraction facts 0-13 is for use like regular flash cards in small groups, or with the talking pen for independent study. Works with the talking hot dots pen that responds instantly with glowing lights and speech, or one of the many positive reward sounds and provides immediate feedback.