Standard 1/Middle School/Benchmark 6
Benchmark Question: How do humans use electricity
Focus Question: How do electrical devices work and
how are they safely used?
Students will work in small
groups and compare characteristics of several working appliances.
Characteristics include on/off switches, wires, complete circuits, etc.
Have students take apart flashlights, reassemble them to work, and diagram
the internal mechanism showing the current flow. Students may bring in
small broken appliances from home. In small groups, students will take
appliances apart and hypothesize why they are not working.
(Extension: Have an appliance repair person come
to class to discuss studentsŐ hypotheses as to why the appliances are not
Note: Remind students that before they
work with an electrical appliance, they should disconnect it from the power
source. The teacher should instruct students on proper electrical safety procedures.