Educational Insights Hot Dots Math Flash Cards- Subtraction Master math facts in no time with Hot Dots Math Flash Cards! Set includes 50 double-sided cards for 100 interactive math problems covering subtraction facts 0-9. 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. <a href="https://www.amazon.com/b?node=14770868011"> International products </a> have <a href="https://www.amazon.com/gp/help/customer/display.html/ref=nav_cs_help?ie=UTF8&nodeId=202045290"> separate terms, </a> are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Manufacturer warranty may not apply <a href="https://www.amazon.com/b?node=14770868011">Learn more</a> about Amazon Global Store. Develops 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 0-13. 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.