Kids, try this at home

Requirements

• They must not be dangerous to the child
• They must be simple and straightforward, so that there is just one way to do it - the right way
• They should be easy to reproduce in household conditions
• They must not require expensive or rare equipment

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Physics

• Use a lens to focus sunlight in a spot and warm something up (Fire hazard!)
• F=m*a
• The arm of a force //термотренажер, door hinges demo

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Research ideas

• Interactive computer exhibits. http://ask.slashdot.org/story/09/12/08/2022230/Interactive-Computer-Exhibits-For-Ages-3-8?art_pos=3