Additional resources

• Various video clips: http://www.bbc.co.uk/ learningzone/ clips/ topics/ secondary.shtml#science [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] (accessed 20 May 2014)
• A series of detailed experimental guides including photosynthesis, respiration and transport in plants: http://www.biology-resources.com/ biology-experiments2.html (accessed 20 May 2014)
• A website with links for human excretion and absorption: http://www.internet4classrooms.com/ high_school/ human_anatomy_physiology_absorption_excretion.htm(accessed 20 May 2014)
• A podcast and supporting article on how to recreate one of the earliest experiments on the circulatory system: http://www.thenakedscientists.com/ HTML/ content/ kitchenscience/ exp/ veins/ (accessed 20 May 2014)