For this activity you need 3 different-sized cans and a small object. Put the object under one of the cans and ask your child to guess which can it is under. Change the position of the cans, but always keep the object under the same can. The aim of the game is to get the child to pick up the can that the object is under 3 times in a row. This activity helps your child learn to use clues (size, shape, etc) to make decisions. O LOVED this activity! We plan on doing it again, and next time I'll used different colored cups and put the object under the same color cup each time.