Most grownups understand that air is polluted, but try explaining that to younger students. They have a difficult time understanding that concept since the air seems clear and therefore they may believe it is not polluted. Perform these few simple experiments with your students to raise awareness of the air they breathe.
Posted: 9 years, 5 month(s) ago
About · Feed · FAQs · Privacy · Terms · Contact
© 2014 Tipspit.com