They usually hypothesize, experiment and attempt to feed their curiosity while playing, running around the house and outside, observing and imitating action of playmates and adults, listening and participating in adult conversations, closely watching and trying things seen on television, emulating actions and speech of the characters on the television programs, commercials and even of the adults, browsing and scrutinizing pictures in books, magazines and other print materials. Above all these, they inquire a lot about how's and why's