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Dinosaur Fossil Dig


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Hello,

my topic after half-term is dinosaurs, Ive got loads of good ideas thanks to this forum, and have followed a thread about making a plaster paris sand mix and hiding bones inside for children to dig out which I'd love to do.

 

I just wondered if anyone can be a bit more specific about how this is made (sorry if this is a bit of a basic question - Im an NQT is my only excuse?) I gather its a mixture of plaster of paris and sand. What stops all the bones sinking to the bottom? and if i make it into a container - say icecream box, how do i get it out? just cut the box off?

 

Thank you in advance.

RG.

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