Efficiency equals money where homes are concerned. A comparative lesson asks learners to measure heat output of incandescent and compact fluorescent light bulbs. They follow their investigation with calculating the cost of using the two types of bulbs.

Concepts

watts, light bulbs, light energy, heat, heat energy

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Instructional Ideas

• Expand the experiment to include different types and sizes of light bulbs

Classroom Considerations

• Expects the use of simple formulas and calculations
• Consider doing the experiment before students to understand any challenges they may face

Pros

• Emphasizes scientific concepts throughout the lesson guide
• Includes tips to help prepare for the lesson

Cons

• None

Common Core

5.NBT.B.5 5.MD.A.1 6.RP.A.3.a 6.RP.A.3.b 6.RP.A.3.c 6.RP.A.3.d 6.NS.B.2 7.EE.B.3