http://www.sheppardsoftware.com/content/animals/kidscorner/games/foodchaingame.htm
http://www.ecokids.ca/pub/eco_info/topics/frogs/chain_reaction/index.cfm
http://www.sciencekids.co.nz/gamesactivities/foodchains.html
http://www.vtaide.com/png/foodchains.htm
http://www.crickweb.co.uk/ks2science.html#foodchains
http://www.zephyrus.co.uk/foodpuzzlechain.html
http://www.ecokids.ca/pub/eco_info/topics/frogs/chain_reaction/index.cfm
http://www.sciencekids.co.nz/gamesactivities/foodchains.html
http://www.vtaide.com/png/foodchains.htm
http://www.crickweb.co.uk/ks2science.html#foodchains
http://www.zephyrus.co.uk/foodpuzzlechain.html