Floating and sinking

Here we are creating a splash as we test what items float and what items sink. We learned that whether an item floats or sinks depends on its density-  how tightly packed together the material inside it is. A boat is very heavy but hollow, so it is not dense so it can float. A marble is small but dense so it sinks. The boys and girls had great ideas bringing in items from home to test if they float or sink.

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