Here are some links related to what you've learnt so far for Science.

http://www.bbc.co.uk/schools/ks3bitesize/science/organisms_behaviour_health/cells_systems/revise3.shtml

http://www.bbc.co.uk/schools/ks3bitesize/science/organisms_behaviour_health/cells_systems/activity.shtml

http://www.bbc.co.uk/apps/ifl/schools/ks3bitesize/science/quizengine?quiz=cells&templateStyle=science

Quick revision on circulatory system

http://www.bbc.co.uk/schools/ks2bitesize/science/living_things/circulation/read1.shtml

http://www.bbc.co.uk/schools/ks2bitesize/science/living_things/circulation/play.shtml