http://www.twu.edu/dsc/ambrose_flemingI.htm

Photo Courtesy of the Spark Museum 

TEKS Objective References:

4.5 The student knows that complex systems may not work if some parts are removed.

4.5A Identify and describe the roles of parts in nonliving systems such as a light bulb in a circuit.

4.5B Predict and draw conclusions about what happens when part of a system is removed.

4.2 The student uses scientific inquiry methods during field and laboratory investigations.

Helpful Web sites:

Teaching Resources:

System Experiment. This experiment shows students that when you remove one part of a system, the system no longer works. The link required to complete the experiment is http://www.energizer.com/learning-center/Pages/how-flashlights-work.aspx

Dissecting a Flashlight.doc

System Assessment.doc

 This is a video of an experience on how light bends.