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Science topics ages 10 - 11
How we see things
Curriculum relevance
| Online lesson plan
Offline lesson plan |
Worksheet |
Activity |
Quiz
Offline lesson plan
Objectives
Understand that mirrors reflect light
Learn that when a beam of light is reflected from a surface, its direction changes
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National Curriculum
England: Key Stage 2, Sc1 2g; Sc4 3a, 3c
Wales: Key Stage 2, Physical processes, 3.1, 3.4
Northern Ireland: Key Stage 2, Physical processes, Light, c
Scotland: 5-14 Guidelines, Science, Properties and uses of energy, Level C
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Resources required
Copies of the How we see things worksheet printed from the Science Clips website
One large, blown-up copy of the worksheet
Torches and mirrors
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Teaching activities
Introduction
Draw a diagram of a light source, a mirror and an eye on the board. Use this diagram to show that flat mirrors reflect a true likeness of objects. This is because light falling on a mirror at a certain angle (the angle of incidence) will be reflected at an equal angle (the angle of reflection). Draw a second similar diagram with the mirror at a different angle. Demonstrate how to work out the angle of incidence and the angle of reflection in each case. On each mirror, draw a line at 90° from the mirror's surface. Show that this line acts as a mirror to the angle of incidence and reflection.
Activities
Tell the children that they are going to draw in the path of light reflected from a number of mirrors. Hand out copies of the worksheet, one per child. Explain that they must draw in the path of light in each example, remembering that the angle of incidence is always equal to the angle of reflection.
Plenary
Ask different children to come up and draw the path of light in each example on the blown-up worksheet. In each case, ask them to draw in the 90° line from the mirror's surface. Ask them to explain their lines and measurements, ensuring that they use the correct vocabulary (angle of incidence, angle of reflection).
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Extension
Draw a maze for other children to reflect a light source onto and move the reflection around the maze. Test it out with a torch and mirrors.
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Suggested homework
Make a list of objects in the home that are light sources and a list of objects that reflect light. What properties of materials reflect light best (shiny, smooth)?
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