Hands-On Math Activities for Preschoolers - Teaching Mama Math is so fun to teach to preschoolers because there are a lot of daily activities that incorporate math. Preschoolers don't need worksheets for math…they should learn through play and hands-on activities. 1. Patterns with Bears Counting Bears are a great math manipulative to use with preschoolers. You can sort, count, or use them with patterns.