Simple Machines | Science Trek | PBS LearningMedia
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Simple Machines | Science Trek | PBS LearningMedia
A simple machine has few or no moving parts, but because of them, humans have been able to create the wonders of the world: the pyramids, computers, even your jar of peanut butter. Learn more about the six types of simple machines—lever, pulley, wheel and axle, inclined plane, wedge, and screw—and how they make work easier.
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325 reactions · 42 shares | Math Riddles: 1. A bat and a ball cost $1.10 in total. The bat cost $1.00 more than the ball. How much does the ball cost? 2. If 7 people meet each other and shakes hands only one with each of the others, how many handshakes will there have been? 3. There is a three-digit number. The second is four times as big as the third number, while the first is three less than the second digit. What is the number? | Philippine Review Center | Facebook
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