Most children will:
name a number of light sources, including the Sun; recognise that they cannot see in the dark; describe and compare some light sources and explain why it is dangerous to look at the Sun
Some children will not have made so much progress and will:
name a number of light sources including the Sun; recognise that they cannot see in the dark and know that it is dangerous to look at the Sun
Some children will have progressed further and will also:
explain that they cannot see shiny objects in the dark because they are not light sources
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