2/29/12
Post date: Feb 29, 2012 2:1:35 PM
Bell ringer: A machine is a device that helps you do work. Give an example of a machine.
Notes - the 6 simple machines
Bill Nye - simple machines
Post date: Feb 29, 2012 2:1:35 PM
Bell ringer: A machine is a device that helps you do work. Give an example of a machine.
Notes - the 6 simple machines
Bill Nye - simple machines