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Learning Exercise

Material: How to Make a Tomato Glow
Submitted by: Maria Alejandra Lucero on Dec 12, 2007
Date Last Modified: Dec 12, 2007
Title: Glowing Tomato
Description: An introduction to the composition of light. The following is meant as an introduction to a unit on light and color.
Type of Task: Group
Time Required 40 minutes
Topics: Light
Audience: Middle School
Learning Objectives: Students will understand the composition of light and where it comes from.
Technical Notes: Prepare glowing tomato (following instructions on website) before class.
Text of Learning Exercise: -Begin class discussion on students' understanding of light. Write student ideas on the board in a brainstorming session.
-What is light made of?
-How does light travel?
-What makes light?
-Where does light come from?

-At this point, most students will begin to name lamps, electricity, and batteries as sources of light. When they do, introduce the glowing tomato.
-If light comes from electricity/batteries/etc., where is the light coming from here?

-Begin powerpoint presentation on light, including what it is composed of, how fast it travels, and the electromagnetic spectrum.

-Give students structured note sheet so that they may follow along with the lecture and fill in empty spaces with appropriate information.
Assessment: Assessment can be made by asking students to answer the question "What is light?" as a quiz.
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