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Make some gears out of cardboard to learn how they work
By BookStore on October 6, 20150'Gears' are special toothed wheels of varying sizes that work together in a set. Gears can work together to...
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Balance forks on a string with the science of levers
By BookStore on October 6, 2015A see-saw is a type of lever and you may have noticed that if you and a friend sit...
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Have some fun with the science of levers
By BookStore on October 6, 2015Machines help us do 'work' by exerting a push or a pull force on an object. 'Work' is done...
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Learn about an object’s centre of gravity
By BookStore on October 6, 2015The steadiness of an object depends on how its weight is distributed. In order to successfully balance an object...
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Learn about levers with this simple experiment
By BookStore on October 6, 2015A 'lever' is one of the earliest and simplest machines known to mankind. A 'lever' consists of a rigid...