The next closest star to us is about 4 3 light years away.
What is a light source year 3.
Though aimed at older children the idea of modelling light using a ribbon and other techniques used in this short demonstration could be used in year 3.
Children could model how light travels from different sources in a straight line and how light is reflected from certain surfaces changing the direction it travels.
Light is an energy source that travels in waves and we can see these wavelengths of light in different colors.
They discuss what a light source is how most light sources are powered and why different rooms have different numbers of light sources.
The new national curriculum introduced in 2014 requires children in year 3 to understand that they need light to see and that light is reflected from surfaces.
All of the other stars we can see with our eyes are farther some even thousands of light years away.
So when we see this star today we re actually seeing it as it was 4 3 years ago.
What is a light source.
In year 3 children begin to fully explore light.
Notice that light is reflected from surfaces i can identify light sources in our school.
Some light can be found in nature like the sun while other light sources are.
They will explore shadows and learn how shadows are formed when a light source is blocked by an opaque item.