Watching my 4 year old laugh and learn while playing games on pbskids.org...
I came up with a question.
But first, a little background: If you haven't seen pbskids.org, please
check it out. It's a large collection of interactive learning games for
young minds to enjoy; lots of interactive puzzles, classic jigsaw
puzzles, music makers, etc... including a puzzle involving the physics
of getting a ball (meatball) to fall from a platform and be guided (by
you) to a landing pad (bowl of spaghetti). The game simulates gravity
and inertia, trajectories, etc...