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"are you ready to turn over those big rocks and find some insects, squeaks? let's use a lever to make it easier! a lever is a simple machine that helps us lift heavy things. it's like a see-saw at the playground, where pushing down on one end makes the other end go up.\n\n## how levers work\n\na lever is a long bar that's balanced on something underneath, called a fulcrum. by pushing down on one end of the lever, the fulcrum makes the other end go up. this helps us lift things that would be too heavy to lift on our own.\n\n## types of levers\n\nthere are three types of levers: first-class, second-class, and third-class. first-class levers have the fulcrum in the middle, like a see-saw. second-class levers have the fulcrum at one end, like a wheelbarrow. third-class levers have the load in the middle, like a pair of tongs.\n\n## lever examples\n\nyou can find levers all around you! forks, bottle openers, and shovels are all examples of levers. forks are third-class levers, bottle openers are second-class levers, and shovels are first-class levers.\n\n## levering the fun\n\nnow that we know how levers work, let's use one to turn over those rocks! by placing the lever under the rock and pushing down on one end, the fulcrum will make the other end go up, lifting the rock with ease.\n\n## conclusion\n\nlevers are a simple machine that make work easier. by using a lever, we can lift heavy things that would be too difficult to lift on our own. so next time you need to lift something heavy, remember to use a lever!"
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