This interactive game at PBS LearningMedia asks the child to experiment with creating shadow shapes that match a picture on a card using the given set of shapes. Players use their knowledge of shapes to determine what individual pieces fit together to match the image that is on the card. This site requires you to set up an account, but there is no charge for accessing the resources.
Select Pre-Kindergarten samples
and scroll down to see the full instructions for the Teddy Bear Positions
(Position/Spatial Relations) Activity.