Additional aspects of light to be considered

Materials and light: light refraction 

Children should explore what happens to light as it travels through air, water and glass. A collection of transparent glass and plastic objects, such as bottles, glasses and fishbowls, should be available to the children. They will observe that when a pencil is placed in a glass of water it will appear broken at the boundary between the water and air. The children can predict how the pencil will appear in different containers. Compare how straight-sided and curved containers affect the appearance of the pencil.