http://www.sviva.gov.il/Pages/HomePage.aspx
http://www.sviva.gov.il/InfoServices/ReservoirInfo/DocLib2/Publications/P0501-P0600/P0541/P0541.pdf
http://www.greenwin.kkl.org.il/features/environment/evironmental-problems/eco_system/
https://kids.gov.il/sababa/
http://ecowiki.org.il/wiki/עמוד_ראשי
http://www.tmir.org.il/content/דפי-משחק-לילדים.aspx
http://www.orianit.edu-negev.gov.il/kayamut/cp/homepage/michzurlearn.htm
