Transform your whiteboard into an interactive, whole-class game space! Simply place the spinner on your whiteboard and use dry-erase markers to create the games and activities you needthe possibilities are limitless. From a classroom management tool to subject-specific games, the Jumbo Magnetic Spinner gets kids on their feet and participating. 16" Diameter. Age Recommendation: Ages 3 and Up; Grades: Grades Pre-K to 3.