http://www.bbc.co.uk/schools/scienceclips/ages/7_8/teeth_eating.shtml
http://www.bbc.co.uk/schools/scienceclips/ages/7_8/plants_grow.shtml
www.bbc.co.uk/schools/scienceclips/ages/7_8/rocks_soils.shtml
www.bbc.co.uk/schools/scienceclips/ages/7_8/characteristics_materials.shtml
www.bbc.co.uk/schools/scienceclips/ages/7_8/magnets_springs.shtml
www.bbc.co.uk/schools/scienceclips/ages/7_8/light_shadows.shtml