WALA: SEEING BEHIND YOU.

WALA: MIRRORS 3

L.O: to know that when reflected light entres our eyes we see an object.

Review

What did we learn in the previous lesson?

STARTER

How could you see something behind you without turning around?

Students to give answers.

If you have been to a hairdresser you might have experience looking at the back of your head in the mirror in front of you when the hairdresser holds a mirror behind you at a certain angle.

Adeline wants to see what the braids at the back of her head look like. Thandi holds a mirror so that Adeline can see the back of her head.

Explanation

The source of light in the room shone on the back of Adeline's head. The light reflected off her head onto the mirror Thandi was holding. The light reflected off Thandi's mirror onto the mirror in front of Adeline. The light reflected off the mirror in front of Adeline into Adeline's eyes.

Ways that we use mirrors

A security mirror in a shop

Discuss how the mirror on the picture helps people to see objects that they couldn't see without the mirror.

A safety mirror on abend in the road

Discuss how the mirror on the picture helps people to see objects that they couldn't see without the mirror.

A dentist mirror

Discuss how the mirror on the picture helps people to see objects that they couldn't see without the mirror.

A rear view mirror in a car

Discuss how the mirror on the picture helps people to see objects that they couldn't see without the mirror.

Conclusions

Do questions on page 59 (Learners book)