Additional aspects of light to be considered
 

LensesĀ 

Children can explore how objects can be magnified using simple hand lenses. They should also observe how common objects such as drops of water, clear marbles and some water-filled containers can be used as magnifiers. They will discover that any clear, curved transparent material acts like a lens. Light rays that pass through the material are bent. This may cause objects viewed through the lens to appear magnified or reduced. The magnifying power of two different improvised lenses, such as a narrow jar of water and a wide jar of water, can be compared.