The Power of Green program reinforces language arts, math, and science skills while exploring tips for conserving energy and recycling, and teaching about electric and gas safety.
Encourage students to become savvy energy consumers with this computation and bar graph activity.
Skills supporting learning standards: reading comprehension; interpreting illustrations, charts, or graphs; problem-solving; computation
1. Begin this lesson by asking students if they have ever seen an electric bill and if they know how much it costs to power a home each month.
2. Distribute the activity sheet and review the information with your students. Have students work independently to complete the page and then review the answers as a class.
3. As a follow-up, ask students to brainstorm ways they could reduce their energy use.
- Kilowatt hour (kWh)
- One kilowatt hour is the amount of electricity it takes to light a 100-watt bulb for 10 hours.
- $109.24/482 kWh ≈ $0.23/kWh
- July—approximately 24 kWh daily. $0.23 x 24 kWh = $5.52; $5.52 x 31 = $171.12
- May—approximately 13 kWh daily. $0.23 x 13 kWh = $2.99; $2.99 x 31 = $92.69
- The increase in usage might have been due to using an air conditioner. Perhaps in May this person didn't need to use a lot of electricity, as the springtime weather is not too hot and not too cold.