TOP SUN-POWERED states in the United States

Grade level: 4th – 5th grades

Skills: Rounding

Related environmental issues: Renewable Energy

The table below shows how much solar power was generated from the top five solar power generating states in the United States in December, 2017.

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  1. Round the number of Nevada to the nearest hundreds.
  2. Rounded to the nearest tens, will North Carolina and Arizona have the same number or not?
  3. The number of which state becomes 200 when rounded to the nearest hundreds? List all.
  4. When rounded to the nearest ______, the number of California becomes 2,000.  A) ones B) tens C) hundreds D) thousands



The 5MW-Walt Disney World Solar Facility near the Walt Disney World Resort. (Orlando Sentinel)


Sources: U.S. Energy Information Administration, 2018. Electric Power Monthly (Table 1.17.A. Net Generation from Solar Photovoltaic)



Answer Keys

  1. 200
  2. Yes.  Both numbers are rounded to 340
  3. Nevada and Texas
  4. D


What are soda bottles made into when recycled?

Grade level: 4 – 5th grade

Skills: Circle graph

Related environmental issues: Recycling

Water and soda plastic bottles use Plastic #1 or PET (polyethylene terephthalate). As a raw material, PET is recognized as a flexible material that is 100% recyclable. When the Plastic #1 containers are recycled, they can be made into lots of things: fiber to make clothes and carpeting, sheet and film to make egg and meat containers, strapping, and more bottles.

The circle graph below shows products made from recycled plastic #1.

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  1. Among fiber, sheet & film, strapping, food & beverage bottles, and non-food bottles, which group makes up the largest portion?
  2. Which group makes up one-fourth of the whole group?
  3. What group makes up more than non-food bottles but less than sheet & film?


Answer Key

  1. fiber
  2. food & beverage bottles
  3. strapping

Source) NAPCOR (National Association for PET Container Resources), 2016. Post-consumer PET container recycling activity report, 2016