Cartesian Divers

These kids do love doing a science experiment.  I wish I knew enough about science to explain some of the principles behind the things we do.  A week or so ago we made the divers out of straws and clay.  Then we put them in a two liter bottle filled with warm water.  When you squeeze the bottle, the diver sinks to the bottom.  Huge hit.untitled

Decorating their bottles when we were finished – all kinds of fish and seaweed and mermaids appeared :-).untitled

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