50 science things to make & do :usborne activity cards 

 - London  Usborne Publishing  2007 
 - Usborne activity cards .
<br/><br/> These activity cards combine fun thngs to do with scientific explanations. Just choose a card, then follow the simple instructions. Activities include a foaming monster, making salt and candy crystals, balloon rockets and testing acids and alkalis with homemade litmus paper 
<br/><br/><label>ISBN: </label>9780746085165 
<br/><br/><label>Dewey Class. No.: </label>R 500 SCI-S  / SCI-S