Gears and Wheels - 0 views
Quite well explained and demonstrated: http://www.youtube.com/watch?v=D_i3PJIYtuY&feature=related
Links and resources for our PYP unit: the form and material of an object affects its use.
Quite well explained and demonstrated: http://www.youtube.com/watch?v=D_i3PJIYtuY&feature=related
A cartoon - good intro..found by student :) http://www.youtube.com/watch?v=9T7tGosXM58