Here is a lesson that I have done on the topic of Density

 Aim: What is density?

Density is the amount of matter in a given space.

You will need a bottle, water, food coloring and oil.  You first explain how a substance with the same matter in a smaller volume is more dense.  To prove this you pour the water into a bottle and then the oil.  The oil will seperate from the water.  The water will sink to the bottom of the bottle because it is more dense and therfore heavier.  

 This video is also at Teacher Tube

Link Density

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