Schoolphysics is an online resource base for all 11 to 19 year old Physics and Science students and their teachers. Resources cover 'Physics in Depth', 'Physics at a glance', animations, exam specifications, data, diagrams, photographic images and more.
Archimedes
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This is a nice, middle school student friendly explaination of Archimedes Principle and Upthrust. Although an actual activity is not provided, there is are explainations with nice graphics.
AAWolfe
February 08, 2014