A song by Mr. W about Cells and the organelles you can find inside.
Source: Mr. W
A rap video explaining Osmosis using Gummy bears. This experiment takes too long to do in class, but feel free to try it at home.
Source: sciencemusicvideos
Different video, same gummy bears. This video also includes a very interesting experiment you could try at home with your friends, on a weekend or holiday.
Source: Kate Mausbaugh
This link will take you to the BBC Bitesize website, (it is full of useful revision tools) where you can watch a very interesting interactive video explaining Diffusion & Osmosis.
http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/cells/osmosisact.shtml