Best Learning Activities for 3 Year Olds for Toddlers The child develops discipline and becomes healthy and relaxed. Yoga and exercises enhance brain development and boosts his/her academic performance. Learning activity for 3 year old will have a relaxed and stress free mind making him healthy and intelligent. The child gains confidence and good physical strength. Music brings sublimity in a Child's' thought process and enhances skills that children can use in other areas of development.