Our second investigation took us outside of the classroom, to find out how shadow length changed throughout the day. We made predictions based on our own experiences and where the sun would be at different times. We also discussed how we would make the investigation fair. Some of the variables that the students said we needed to keep the same were:
- Measure the same person
- Stand up straight
- Measure from the same place
The students worked in small groups to carry out the investigation. They had to cooperate as a team to outline and measure the shadows accurately. Our results showed that our shadows were long in the morning, short at midday and then long again in the afternoon. Some of our shadows were over 3 metres long in the afternoon! As we observed the shadows throughout the day, we also noticed that the direction of the shadows changed in connection with the position of the sun.
After learning how important light is to us, we also spent some time thinking about the dangers of the sun. We found out that we should never look directly at the sun as it can damage our retinas. The students got creative and designed their own eye protection to keep them safe from the sun.