Which are good insulators?

http://www.bbc.co.uk/schools/ks2bitesize/science/materials/keeping_warm/play.shtml

Solid, liquid or gas?

http://www.bbc.co.uk/schools/ks2bitesize/science/materials/gases_liquids_solids/play.shtml

Physical Properties

http://www.bbc.co.uk/schools/ks2bitesize/science/materials/characteristic_materials/play.shtml

Changing the state of matter

http://www.bbc.co.uk/schools/ks2bitesize/science/materials/changing_state/play.shtml

Which rocks will float?

http://www.bbc.co.uk/schools/ks2bitesize/science/materials/rocks_soils/play.shtml

What is it made of?

http://www.bbc.co.uk/schools/scienceclips/ages/6_7/grouping_materials.shtml

Building a Circuit

http://www.bbc.co.uk/schools/scienceclips/ages/6_7/electricity.shtml