plane mirror. useful in each case. diagram to knowledge of Describe some uses of plane mirrors. explain how their mirrors and Describe the difference between even Exploring: Make a periscope periscope works. reflection. reflection and scattering, and recall the Ask students if they know what a law of reflection. periscope is, and to suggest some Demonstrate Use the ray model of light to explain uses for it. Then ask students the various how we see things that are not sources to design their own periscope using properties of an of light. their knowledge of mirrors and image in Securing reflection. a plane mirror. State the meaning of: diffuse, specular, incident ray, reflected ray. Explaining: Images in plane mirrors Use the ray model of light to explain Demonstrate the various properties of how a periscope works. an image in a plane mirror. The Use ray diagrams to explain the law of distance of the image behind the reflection and to describe the mirror can be demonstrated simply differences in light reflected from by laying a ruler at right angles to the smooth and rough surfaces. mirror, or use an object such as a Describe the characteristics of the pencil stuck in a piece of modelling image formed by a plane mirror and clay in front and behind the mirror. use ray diagrams to explain its formation. Plenary: Thinking about reflection Exceeding Odd One Out: incident ray, reflected State the meaning of: convex mirror, ray, normal. (Possible answers: concave mirror. normal is not a light ray; normal is Use ray diagrams to explain some of the only one that has a fixed the features of images in periscopes. angle.) What Was The Question: Working Scientifically specular. (Possible questions: What is Explain why internationally agreed the name for the type of reflection symbols and conventions are that happens in a mirror? Name the necessary in science communication. type of reflection where all the Interpret diagrams that use scientific reflected rays go in the same symbols and conventions. direction.) Lesson 8Jc: Refraction Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Refraction demonstrations Exploring: Resources n/a Show students
plane mirror. Describe some uses of plane mirrors. Describe the difference between even reflection and scattering, and recall the law of reflection. Use the ray model of light to explain how we see things that are not sources of light. Securing State the meaning of: diffuse, specular, incident ray, reflected ray. Use the ray model of light to explain how a periscope works. Use ray diagrams to explain the law of reflection and to describe the differences in light reflected from smooth and rough surfaces. Describe the characteristics of the image formed by a plane mirror and use ray diagrams to explain its formation. Exceeding State the meaning of: convex mirror, concave mirror. Use ray diagrams to explain some of the features of images in periscopes. Working Scientifically Explain why internationally agreed symbols and conventions are necessary in science communication. Interpret diagrams that use scientific symbols and conventions. useful in each case. Exploring: Make a periscope Ask students if they know what a periscope is, and to suggest some uses for it. Then ask students to design their own periscope using their knowledge of mirrors and reflection. Explaining: Images in plane mirrors Demonstrate the various properties of an image in a plane mirror. The distance of the image behind the mirror can be demonstrated simply by laying a ruler at right angles to the mirror, or use an object such as a pencil stuck in a piece of modelling clay in front and behind the mirror. Plenary: Thinking about reflection Odd One Out: incident ray, reflected ray, normal. (Possible answers: normal is not a light ray; normal is the only one that has a fixed angle.) What Was The Question: specular. (Possible questions: What is the name for the type of reflection that happens in a mirror? Name the type of reflection where all the reflected rays go in the same direction.) diagram to explain how their periscope works. knowledge of mirrors and reflection. Demonstrate the various properties of an image in a plane mirror. Lesson 8Jc: Refraction Learning objectives Exemplar teaching activities Differentiation Resources Maths skills Practical skills Developing Starter: Refraction demonstrations Exploring: Resources n/a Show students
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