Description:
CLEAN WATER This 2 page Teacher's Guide is intended for grades K to 4. It explains how to construct a filter to simulate the water purification system on the International Space Station. Use a soda bottle, charcoal, sand, gravel and a cheesecloth, to filter water. Try this at school, or experiment at home! Download Details Requires: Filename: Water.Purification.for.the.ISS.pdf Filesize: 38 K Download Sites: [ HELP! I can't download! ] | |||||||||||||||||||||||||||||||||||||||||||