What state used the largest amount of energy?

Grade level: 3rd – 4th grades

Skills: Expanded notation

Related environmental issues: Energy

 

The table below shows the average amount of energy used by a person in the top 10 energy using states in 2016.

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1. Arrange the states from greatest to least.

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2. How many even numbers do these numbers have?

3. Which state has a number closest in value to 490?

4.Which state has a number whose expanded notation is written as

(4 x 100) + (7 x 10) + (2 x 1)?

5. How can you write Indiana’s number in expanded notation?

Sources:U.S. Energy Information Administration

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Answer keys

  1. Screen Shot 2018-09-14 at 10.29.47 AM
  2. 3
  3. Iowa
  4. Texas
  5. (4 x 100) + (2 x 10) + (2 x 1)

Do we use more water for toilet or shower?

Grade level:  5 – 6th grades

Skills: Circle graphs

Related environmental issues: Water

The circle graph below shows how the average American family uses water at home.

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1. For what purposes does the average American family use the most water?

2. For what purposes does the average American family use more water, shower or washing machine?

3. The average American family uses 300 gallons of water a day. How many gallons of water does the average American family use for shower?

4. The average American family loses a lot of water to leaky toilets, appliances and faucets. What percentage of water is wasted through leaks?

5. How many gallons of water does the average American family lose through leaks a day?

Sources: U.S. Environmental Protection Agency, 2018. How We Use Water

To find and fix water leaks, visit here (Water Footprint, 2018. Indoor Water Leaks)

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Answer keys

  1. Toilet
  2. Shower
  3. 300 x 0.2 = 60 (gallons)
  4. 100 – 24 – 20 – 19 – 17 – 8 = 12 (%)
  5. 300 x 0.12 = 36 (gallons)