Make a sand stone :

Things needed :

v  Fine sand

v  Two paper cups

v  Water

v  Epsom salt

How to make ?

   v  Take a paper cup. Drop 1 inch of fine salt into it.

   v  Fill another cup with water  about 1 inch high.

   v  Add Epsom salt slowly with stirring still no more salt dissolves.

   v  Pour the Epsom salt solution over the sand in the cup. Stir well.

   v  Place the mixture in a place where it will dry.

   v  It will take few days to dry.

   v  When it is completely dry, take the paper cup away from the sand.