Educational Insights Hot Dots Math Flash Cards- More Subtraction Master subtraction in no time with Hot Dots Math Flash Cards! Set includes 50 double-sided cards for 100 interactive subtraction problems using numbers 13-19. Use as basic flash cards or add the Hot Dots Talking Pen (not included) for instant reinforcement. Touch the pen to an answer dot for positive reinforcement (correct responses) or gentle redirection (incorrect responses). Perfect for independent, self-paced learning. Builds upon basic subtraction skills necessary for school success. Provides confidence-building feedback. Encourages independent, self-paced learning. Features 50 double-sided flash cards that students can use on their own, with a buddy or in a group: turn cards over to self-check. Supports subtraction fact fluency for numbers 13-19. Package doubles as storage box for quick cleanup; easily send cards home with students who need extra practice. Works with Talking Hot Dots Pen (available separately), which provides audio and visual feedback that allows students to complete activities independently.