MACHINES CAN BE CLASSIFIED BY THEIR ENERGY SOURCE OR FUNCTION., SIMPLE MACHINES HAVE FEW OR NO MOVING PARTS., A SCREW IS A SIMPLE MACHINE., ALL MATERIALS CONTAIN ELECTRICAL CHARGES., METALS ARE GOOD ELECTRICAL CONDUCTORS., WOOD AND RUBBER ARE GOOD ELECTRICAL INSULATORS., MACHINES CAN BE DANGEROUS IF WE ARE NOT RESPONSIBLE.,

Year 4 - BME Unit 6 - Organize the Sentences

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