Answers

2015-06-27T17:23:12+05:30
You can make several models such as 

1) Ice tray Battery 
2) Make ear drum t detect sound waves 
3)Ballon power car 

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2015-06-27T17:32:21+05:30
You may make
1.A praxinoscope
2.A kaleidoscope (its hard a little)
3.A static gadget (working on heat)
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