How many homes has Former President Jimmy Carter helped powering with clean energy?

Grade level: 4th – 6th grades

Skills: Multiplication (decimals)

sRelated environmental issues: Renewable Energy

Former President Jimmy Carter is a big supporter of renewable energy and helped a solar farm project which constructed as many as 3,850 of solar panels in his hometown in Georgia. He also installed 320 solar panels on the Jimmy Carter Presidential Library.

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Plains Solar Farm, Georgia (Photo: Futurism)

  1. Each solar panel can power 1.3 American homes. How many homes can the solar farm power?
  2. How many homes can the solar panels on the Library power?
  3. How many homes has Former President Jimmy Carter helped powering with clean energy?

 

 

Note 1) The Plains solar farm generates 55 million kilowatt hours per year.

Note 2) The average annual electricity consumption for a U.S. residential utility customer was 10,766 kilowatthours (kWh). (U.S. Energy Information Administration)

 

Note 3) The numbers were slightly modified. The actual numbers of solar panels are 3,852 and 324.

 

 

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Answer keys

  1. 5,005 homes    (3,850 x 1.3 = 5,005)
  2. 416 (320 x 1.3 = 416)
  3. 5,421 homes (5,005 + 416 = 5,421)

SOLAR ENERGY IN THE US

Grade level: 3rd – 5th grades

Skills: Addition & Subtraction (Decimal numbers)

Related environmental issues: Energy /  Renewable Energy

The table below shows shows how much new solar power was installed the United States each year between 2008 and 2017. Solar power means electricity generated by solar panels.

1 Gigawatt = 100,000,000 kilowatts (With 1 gigawatt of solar power, we can power 190,000 homes!)

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1. Which year has the largest number?

2. What is the difference between the numbers of the years 2014 and 2015?

3. Is the amount of solar panels installed in 2011 more than those installed in 2009 and 2010 combined or less?

4. What is the difference between the largest number and the smallest number?

5. Which year has the number 4.4 larger than  0.38?

6. Which two numbers make the largest value when added?

Sources:

 

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Answer keys

  1. 2016
  2. 7.5 – 6.24 = 1.26
  3. More : 1.92 > (0.38 + 0.85)
  4. 15.13 – 0.3 = 14.83
  5. 2013
  6. 15.13 and 10.61