Toy "peek-a-boo"

physical principle: interaction with young child

age group: (people that play "peek-a-boo")

interaction: parent or child winds up toy, which moves arms in front of eyes and makes sound, captivates young child.

construction/safety:  injection molded plastic for the body and arms will be cheap, but the arms could break off  and become a choking hazard.

what I learned:  plastic is cheaper, but less durable than metal.