Point out the shape
Ask the baby to point out the shape of the object, or count with the baby. A simple and interesting number game is to count from 1 to 10 with your fingers or toes. Mom and dad can also sing a digital song for the baby.
Learn to compare
Tell the baby that mother is lower than father, mother is higher than baby, watermelon is bigger than orange, and 4 sugars are more than 3 sugars.
Learn to classify
Teach children to classify toys according to their own understanding, such as separating his toy train from his small plane, and then counting how many are in each one.