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In physics, reflection occurs when a light wave encounters an object that acts as a barrier, or reflects or bounces off a surface.
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The first way to change or control light is through reflection. There are several ways light can be controlled or changed: reflection, refraction, or diffraction. Opaque objects, however, such as a tree or a person, do not allow light to pass through. Translucent objects scatter light waves in different directions. Light easily passes through transparent objects, like clear water or glass. It can also travel through liquids and gases, as well as some solids if they are transparent or translucent, such as glass. Nothing in the universe can travel faster than light. Light travels at a speed of 186,000 miles per second, so it actually takes eight minutes for light from the sun to reach the earth. Students will learn that light is a form of energy that becomes visible when it reflects off the surface of an object. The first page provides students with background information on light. The Reflection, Refraction, Diffraction lesson plan contains four pages of content. REFLECTION, REFRACTION, DIFFRACTION LESSON PLAN CONTENT PAGES Light You can use the blank lines to write down any other ideas you have before giving the lesson to students. It suggests using this lesson in conjunction with others that relate to light or physical science in general. The paragraph on this page provides a little extra guidance or instruction as you prepare the lesson. Students can then present a more detailed report about that particular property. Another idea is to assign students one of the three properties to study and research. Hands-on activities help students better understand the concepts they learn about. One idea is to plan an additional activity in which students use a number of objects (e.g., laser pointer, flashlight, glass of water, mirror, etc.) to demonstrate and explain the three properties of light. There are a number of suggestions in the “Options for Lesson” section that you can take advantage of if you have time or want to extend the lesson further. In addition, it describes the supplies you will need as well as what and how you need to prepare beforehand. You will find the lesson objectives, state standards, and number of class sessions the lesson should take to complete in this area. It also lists information in the yellow box that you might find useful. The guide helps you organize the lesson and details when to hand out worksheets.
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You do not have to follow the guide exactly. Classroom ProcedureĮvery lesson plan provides you with a classroom procedure page that outlines a step-by-step guide to follow. This lesson is for students in 4th grade, 5th grade, and 6th grade. They will also be able to describe the traits of these three properties of light. Students will be able to define each of these three terms and explain their meaning. While students may be familiar with reflection and refraction, diffraction might be a new concept to them. Lesson Objectives and Overview: Reflection, Refraction, Diffraction teaches students about how light reacts in different settings. Description What our Reflection, Refraction, Diffraction lesson plan includes