Activities
 
Clear Water Turns Milky
 
Do we breathe out carbon dioxide? Yes we do! This is how fourth graders tested the presence of CO2 in the air exhaled. It blew their minds.
 
 
     
 
     
 
     
   
 
© www.lestyre.org, Inc. All rights reserved. Unless otherwise indicated, all materials on these pages are copyrighted.