Year 3 began this unit by thinking about the question ‘what is light?’. They looked at a variety of objects/images to determine what a light source is. Some of the objects that we needed to have more in depth discussions about were; the moon, windows, reflective clothing and mirrors.
We decided on the following: a light source is something that gives out light.
A mirror is not a light source because it does not give out light – it reflects light. A window is not a light source because it does not give out light – it allows light to pass through. The moon is not a light source because it does not give out light – it reflects the sun’s light.
We continued by investigating the reflective properties of different materials in order to design a school rucksack.
Look at these fabulous designs:
We continued by looking at different types of mirrors. The convex and concave mirrors were very surprising!
We also studied the way that shadows change in relation to the time of day and distance from the light source.
We found out about a famous scientist from history – Justus Von Liebig who invented the mirror.