4/13/12
Post date: Apr 16, 2012 1:16:18 PM
Bell ringer (written): How are sounds made? How does your body make sound when you speak?
Continue 17-4 notes
Bill Nye - Sound
Post date: Apr 16, 2012 1:16:18 PM
Bell ringer (written): How are sounds made? How does your body make sound when you speak?
Continue 17-4 notes
Bill Nye - Sound