40 Kid-friendly math cartoons, problems, and questions.Comprehension of math vocabulary terms is crucial to math success and humor is an effective way for students—even struggling students—to understand and recall important information. The front of each card in this set introduces a key math term, using a funny, kid-friendly cartoon. The term is repeated in a question or problem on the back of each card, reinforcing comprehension. Use with the Hot Dots® pen for a fun and interactive way to practice math vocabulary. Pen sold separately.