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
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