1. Date Lesson2: Reflection Lesson Outcomes How I did Targets
Connector:
Mirror experiment
List examples of situations where mirrors can help people to bring light into dark areas
Lesson Outcomes
How I did
Targets
Task 1:Demonstrate and prove that light travels in straight lines
Level 5
Task Devise an experiment to test whether there is a relationship between the angle of incidence and the angle of reflection
Level 6
Task 3: apply your knowledge of reflection to produce a light tube
Level 7
Working in small groups, pupils are given one torch, one sheet of card as a target and a number of mirrors. The challenge is to bounce the beam from the torch from mirror to mirror and so onto the target

2. BIG picture What skills will you be developing this lesson?
Numeracy
Team work
Independent enquiry
How is this lesson relevant to every day life?

3. New Information for Task 1

4. Task 1 (Level 5)
Task 1:
For each experiment, write down an explanation of how the experiment shows that light travels in straight lines.
Describe another experiment that you could do to show that light travels in straight lines.
Builders use laser beams to check that bricks are laid level. Why might this be better than using a traditional spirit level that uses a bubble in liquid to check for levelness?
Soldiers use a laser beam to help aim a rifle. Describe how this can help the accuracy of shooting.
Keywords for Task 1:
Beam
light
straight
ray
focus

5. Task 1: Answers
Experiment 1 shows that light can travel through the rubber tube but not if it bends.
Experiment 2 shows that the hole in the card must line up for light to pass through three of them. If it could travel in a curve, it would shine through the other set of holes as well.
Experiment 3 shows that light travels in straight lines otherwise it would bend round the card and fill-in the shadow area, and it doesn’t
(3) Light beams have no weight and can be used over a very long distance. A spirit level can only be used over small distances and they are often long and heavy.
(4)The laser beam produces a spot on the target that can be seen by the soldier. The light travels in a straight line and shows where the bullet will travel to.

6. How can I improve on task 1?
Task 1: Review
Go back to your lesson outcome grid and fill out the ‘How I did’ and the ‘Targets’ column.
Lesson Outcomes
How I did
Targets
Task 1:
Level 5
Met?
Partly met?
Not met?
How can I improve on task 1?

7. New Information for Task 2

8. New information task 2

9. New information task 2
You are going to do an experiment, using the equipment listed above, to confirm or contradict the statement that ‘the angle of reflection is equal to the angle of incidence’.
Draw a results table to record you measurements in. This will need to record the incident angle and the reflected angle

10. New information task 2
Draw a results table to record you measurements in. This will need to record the incident angle and the reflected angle
Draw the normal, the position of the mirror and the incident angles accurately on a piece of paper. This should look very similar to the diagram above. Put the mirror along the mirror line on the paper and shine a light ray along one of the incident lines you have drawn. Draw the path of the reflected ray on the paper. Repeat this for all of the incident angles.
Now remove the mirror and measure the angle of each reflected ray and record the results in your results table. Notice that the angles are measured between the normal and the light ray.

11. Task 2 (Level 6)
Task 2:
Plot a graph of your results and add a straight line of best fit
Using your results, write a simple statement describing the link between the angle of reflection and the angle of incidence
Keywords for Task 2:
incidence
Reflection
Angle
mirror

12. Task 2: Answers

13. How can I improve on task 2?
Task 2: Review
Go back to your lesson outcome grid and fill out the ‘How I did’ and the ‘Targets’ column.
Lesson Outcomes
How I did
Targets
Task 2:
Level 6
Met?
Partly met?
Not met?
How can I improve on task 2?

14. New Information for Task 3
Equipment
Rolled paper tune
Piece of foil
Sticky tape
Glue stick
Piece of A4 paper

15. Task 3: (Level 7) Keywords for Task 3: reflection ray light tube
You are trying to get as much light to the end of the tube as you can. You may only use the equipment provided.
You have 5 minutes to plan what you are going to do. You cannot have the equipment until this time is up.
You have 10 minutes to produce your light tube.
Draw a well labelled sketch of your design, showing the features of your design and how it uses science to get the best results.
Task 3: Extension
Test all designs using a light meter
Keywords for Task 3:
reflection
ray
light
tube
refract
emit
detect

16. Task 3: Answers

17. How can I improve on task 3?
Task 3: Review
Go back to your lesson outcome grid and fill out the ‘How I did’ and the ‘Targets’ column.
Lesson Outcomes
How I did
Targets
Task 3:
Level 7
Met?
Partly met?
Not met?
How can I improve on task 3?

18. Review
Write 2 sentences using the words reflection, image and mirrors.