A group of children stand in a line. The boy in the middle holds a red bag. The children take turns pulling things from the bag to demonstrate what matter is. A girl pulls out a rock. A boy pulls out marbles. A boy pulls out sand. A girl pulls out a cat. A glass filled with water and a balloon filled with air are pulled out of the bag. The girl unties the balloon and feels the air rush out.
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1970s
8403_science_class6
A person tries to push water in a glass with a plunger. A person tries to…