Lesson note on refraction of Light

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Ebi asked 1 year ago

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1 Answers
User AvatarStopLearn Team Staff answered 1 year ago

Here is an example of a lesson note on the topic of refraction of light for a high school physics class:
Title: Refraction of Light
Grade level: High School
Objective:

  • Students will be able to define refraction of light and understand the laws governing it.
  • Students will be able to explain how refraction occurs and give examples of situations in which it occurs.
  • Students will be able to calculate the angle of refraction using Snell’s law.

Materials:

  • Whiteboard and markers
  • Refraction simulation app or software
  • Index of refraction table
  • Protractor

Introduction (5 minutes):

  • Ask students if they have ever noticed a straw appearing to bend when placed in a glass of water.
  • Introduce the topic of refraction of light, defining it as the bending of light as it passes from one medium to another with a different refractive index.
  • Explain that the goal of the lesson is to understand how and why this happens.

Direct Instruction (15 minutes):

  • Review the concepts of reflection and transmission of light.
  • Introduce Snell’s law and explain how it is used to calculate the angle of refraction.
  • Show a simulation of light passing through different media, demonstrating how the angle of incidence affects the angle of refraction.
  • Provide examples of refraction in everyday life, such as the mirage on a hot road or the apparent bending of objects when viewed through a glass of water.

Guided Practice (15 minutes):

  • Distribute index of refraction tables and protractors to students.
  • Provide a worksheet with several problems in which students must calculate the angle of refraction using Snell’s law.
  • Walk around the room to answer any questions and provide guidance as necessary.

Independent Practice (15 minutes):

  • Assign a homework assignment that requires students to identify and explain situations in which refraction occurs in everyday life.
  • Encourage students to be creative and think outside the box in their examples.
  • Collect the assignments at the beginning of the next class.

Closure (5 minutes):

  • Review the key points of the lesson, emphasizing the importance of understanding how light behaves when passing through different media.
  • Encourage students to continue thinking about and observing the effects of refraction in their everyday lives.

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