Alligator Clip two objects to the MaKey MaKey board. For example, you and a banana.
When you touch the banana, you make a connection, and MaKey MaKey sends the computer a keyboard message. The computer just thinks MaKey MaKey is a regular keyboard (or mouse). Therefore it works with all programs and webpages, because all programs and webpages take keyboard and mouse input.
Make + Key = MaKey MaKey!