Which rock is best to build a wall? 

This week we have been investigating which rocks would be best to build a wall. We tested different rocks for permeability and hardness. The children were very scientific and made some great predictions. They used the equipment well and decided at the end that slate and marble would be best. We then talked about how some rock are expensive and how marble would make a very expensive wall! Here are some pictures of us completing the investigation. 

  

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