Teacher’s name: Shomenova Zh.S. Number present Number absent

Lesson: 

Date:

Teacher’s name: Shomenova Zh.S.

Grade:

Number present         

Number absent

The topic of the lessons

Reflection. Refraction.

Learning Objectives

—   Experimentally determine relationship between the angle of incidence and the angle of reflection;

- Explain and give examples of  Refraction.

Lesson Objectives:

By the end of the lesson, the learner will be able to:

ü  ALL learners will be able to recall relationship between the angle of incidence and the angle of reflection

✓     SOME learners will be able to explain and give examples of  Refraction.

Language Objectives:

Subject Learning:

Learners can explain and give examples of  Refraction.

Language Learning:

✓     Learners can explain recall relationship between the angle of incidence and the angle of reflection (speaking and listening skills OR reading and writing skills)

Subject-Specific Vocabulary and Terminology:

reflection , refraction, angle of incidence, angle of reflection,  law of reflection

Useful Sets of Phrases for Dialogue and Writing:

•        Angle of Incidence – angle made by the incident ray and the normal

•        Angle of Reflection – angle made by the reflected ray and the normal

ICT skills

Projector or Smart board for power point presentation

Lesson’s plan

Planned

timings

 1-2 min

3-35 min

35-40 min

Planned Activities

I. Organization moment:

Greeting.

II. Introduction new topic:

Reflection – some or all of a wave bounces back into the first medium when hitting a boundary of a second medium

When all the wave energy is reflected back instead of being transmitted, it is total reflection

If some energy is transmitted and some is reflected, the wave is partially reflected

The Law of Reflection

•    The direction of incidence and reflection is best described by straight-line rays

•    Incident rays and reflected rays make equal angles with a line perpendicular to the surface, called the normal

•    Angle of Incidence – angle made by the incident ray and the normal

•    Angle of Reflection – angle made by the reflected ray and the normal

•    Law of Reflection –the angle of incidence and the angle of reflection are equal

Virtual Image – the point located behind a mirror where an object appears to originate

Your eye cannot tell the difference between an object and its virtual image

The image is as far behind a mirror as the object is in front of the mirror

The law of reflection holds for curved mirrors. 

a. The image formed by a Convex mirror is smaller than the object.

b. When an object is close to a concave mirror, the image can be larger than the object.

For reflections in a plane mirror, object size equals image size and object distance equals image distance.

Refraction – the change in direction of a wave as it crosses the boundary between two media in which the wave travels at different speeds

Wave Fronts – lines that represent the position of different crests

At each point along a wave front, the wave is moving perpendicular to the wave front

The direction of motion is best represented by a ray

III.  Home task: learn law of reflection.

Reflection:

Name one thing you would like to know more

Give one thing which you find difficult

Name one thing you liked most

Resources

presentation