Light - Reflection & Refraction - Two Fully Resourced Lessons for KS3

Two comprehensive and fully resourced lessons on refraction and reflection for KS3. Each topic comes with an engaging, animated PowerPoint and eleven printables which make even the more difficult concepts easy to understand.

Emphasis is placed on assessment for learning and detailed answers to questions are provided throughout, which makes self-assessment and peer assessment easy. Each topic comes with a checklist for pupils to assess their progress on completion of the topic.

Each topic comes with a one-page flow-chart lesson plan showing where logical choices between resources can be made enabling the teacher to totally bespoke lessons according to pupil ability, time available for the topic and focus of departmental/school policy Resources not used in the lesson can be additional homework or used for pre-examination revision. Many activities place an emphasis on literacy and oracy. These are identified on the flow-charts.

What’s Covered

Reflection

• Transparent, translucent and opaque materials
• Luminous and non-luminous objects
• Labelling the incident and reflected rays, the angles of incidence and reflection, the normal and the point of incidence
• Virtual experiment to prove i = r
• Ray diagram showing how the eye sees an image in a plane mirror
• The image formed in a plane mirror is upright, virtual (appears to be formed behind the mirror) laterally inverted, the same size as the object and as far behind the mirror as the object is in front.
• Ray diagram showing how the eye sees an image in a periscope
• Specular and diffuse images

Refraction

• The more dense the medium the slower the speed of light.
• When light travels from a less dense medium to a more dense medium it is bent towards the normal.
• When light travels from a more dense medium to a less dense medium it is bent away from the normal.
• Light hitting a boundary at 900 is not refracted.
• Light is not refracted at a curved boundary.
• Complete ray diagrams showing refraction.
• Design an experiment and results table to investigate refraction through a semi - circular glass block
• Why lightning is seen before thunder is heard when a cloud discharges.
• Real and apparent depth

What’s Included for Each Lesson

• Animated PowerPoint for teaching with exit ticket quiz
• Answer/mark scheme PowerPoint
• Flip it (pupil writes questions to given answers)
• Anticipation Guides (combined starter and plenary)
• Foldable
• Cut and stick activity.
• Worksheet to support the PowerPoint
• Fact sheet
• Homework plus answers
• Fact share worksheet
• Pupil progress self-assessment checklist
• Exit Ticket
• Suggested lesson plan showing choices possible between resources

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