http://www.sciencekids.co.nz/gamesactivities/lifecycles.html
http://www.sciencekids.co.nz/gamesactivities/plantsgrow.html
http://flash.topmarks.co.uk/2264
http://flash.topmarks.co.uk/2265
https://resources.hwb.wales.gov.uk/VTC/plants_light_water_to_grow/eng/Introduction/default.htm