Learning Magnets Magnetic Numbers & Math Signs set includes 30 high-quality magnets - two sets of the numbers 0 to 9 (which can be combined to make larger numbers) and ten commonly used math signs. The numbers are color coded - odd numbers are blue and even numbers are red. This versatile set is great for mastering number identification, strengthening counting skills, learning number facts, and practicing simple math skills. Launch date: 2012.