Which materials are waterproof? 

This afternoon we tested to see which materials were waterproof and which were not. We learnt all about Charles Macintosh. 

Thank you so much to our two science technicians who helped set up the experiment and carry it out. 


When we used blue paper towel the water went straight through. When we drew over the paper towel in wax crayon the water floated on the top! Why was this?