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Search > Learning Exercise Results > Glowing Tomato

Learning Exercise: Glowing Tomato

Glowing Tomato
An introduction to the composition of light. The following is meant as an introduction to a unit on light and color.


Submitted by:
Maria Alejandra Lucero
Date Last Modified:
December 12, 2007


-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.



  • Middle School



Learning Objectives

Students will understand the composition of light and where it comes from.

Type of Task

  • Group


Assessment can be made by asking students to answer the question "What is light?" as a quiz.

Technical Notes

Prepare glowing tomato (following instructions on website) before class.