Machines - Video Version

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Machines - Video Version
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2nd, 3rd, 4th, 5th, 6th, 7th
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Machines
Song

There are 6 simple machines that help us do our work
6 simple machines that we can’t overlook
We use them everyday in our work and in our play
6 simple machines helping us everyday.

Spoken:
The wedge is a device that has 2 or more sloping surfaces
that taper to a sharp edge or a point. Knives,chisels,axes,pins,needles and nails are wedges.


The screw is an inclined plane wrapped in a spiral around a shaft. It was developed in ancient times.

Song

The lever consists of a rod or bar that rest and turns on a support called a fulcrum. A force of effort is applied at one end of the rod to lift a load placed at the other end.A lever can help lift a weight with less effort.


A pulley is a wheel over which a rope or belt is passed.It helps transmit energy.

Song

A wheel and axle is a mechanical device used in lifting loads. It was developed in ancient times and ranks as one of the most important inventions in history.



An inclined plane is a device used to raise a heavy load with a small force. Ramps and steps are forms of inclined planes.
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Machines - Video Version
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