This is a classic Piagetian test of object permanence: Have three cloths or small blankets available along with a small toy the child likes.
Slide the toy under the first blanket, then the second, then the third blanket.
The infant finds a hidden object.
Tell early childhood educators and parents that playing games like peek-a-boo, hiding crackers in a fist or under a cup for the child to find are fun games that encourage children to be persistent toward a goal. Remind parents that although drop-and-pick-up can become tiresome for adults, it is a game that teaches children about distance and how the object changes appearance up close and far away.
 North Carolina Department of Public Instruction, 2015
©2015 by the North Carolina Department of Public Instruction. This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. To view a copy of this license, visit https://creativecommons.org/licenses/by-nc-sa/4.0/.