Week 4, Assignment #3, UDL LESSON 2

UDL Lesson #2 Overview

Title:	Can you make your own rainbow?
Author:	Kelly Demetra Varsami
Subject:	Elements of rainbow
Grade Level(s):	1st
Duration:	One Period
Subject Area:	Science / Math
Unit Description:	Students will learn the relationship between simple elements and natural phenomena
Lesson Description for Day:	Students will be able to create a rainbow by simply using sunlight and water
State Standards:	1.Asking questions and defining problems 2. Developing and using models 3. Planning and carrying out investigations 4. Analyzing and interpreting data 5. Using mathematics and computational thinking 6. Constructing explanations and designing solutions 7. Engaging in argument from evidence 8. Obtaining, evaluating, and communicating information

Goals

Unit Goals:	Students will be able to acquire basic knowledge about natural phenomena and how they are formed
Lesson Goals:	Students will learn the relationships water and sunlight and how that gives us a rainbow

Methods

Anticipatory Set:	Show the students images of naturally occurring rainbows (single and double rainbows). Ask: What colors do you see in the rainbows? How do you think these rainbows are created? Look closely at the double rainbows. How are they different? Show students the picture of a right triangle.
Introduce and Model New Knowledge:	Demonstrate: Position yourself with the sun directly behind you so that you and your shadow form the legs of a right triangle, as shown. Position the hose approximately halfway between your shadow and you. The actual angle is 42 degrees for the primary rainbow and 50 degrees for the secondary rainbow. However, halfway will be easier for the students to understand. Have a student turn the water on FULL blast. Arc the hose spray to create the rainbow. The rainbow should be formed close to the halfway point between the legs of the triangle.
Provide Guided Practice:	Ask: What colors do you see in the rainbow? What color is at the top? At the bottom? Have the students take turns creating their own rainbow. It may be possible to create a double rainbow in this manner, but the secondary rainbow will be faint.
Provide Independent Practice:	Have each student do an independent (or in a group of 2 or 3) research on the internet regarding the topic of the lesson. What can they find out about the formation of the rainbow?

 

Assessment

Formative/Ongoing Assessment:

Explain what they should keep from the above activity: To create a rainbow you need a source of light and something that will refract and reflect the light. The light from the sun is refracted (bent) and reflected (bounced) inside the droplets of water from the hose. As each color of the rainbow has a different-sized wavelength, the way they are refracted and reflected causes the sunlight to split into the different stripes of the rainbow. The responses of all the students will be checked to make sure they did comprehend the key points.

Summative/End Of Lesson Assessment:

Create a rainbow in the classroom: In the story, Sometimes Snow Falls in the Summer, a rainbow is created in Ella’s room by a prism. There are many ways to create a rainbow–using CDs, water, water and oil, and many more. Try your own hand at creating rainbows in the classroom.

Materials

Garden hose with an adjustable nozzle attached Photographs of naturally occurring rainbows Picture of a right triangle or angle Open space outside Sunshine (the sun should NOT be directly above you)