What country is the World’s largest producer of CO2?

Grade level: 4th – 6th grades

Skills: Circle graph

Related environmental issues: Climate Change

The circle graph below shows how much carbon dioxide (CO2) was emitted from the world’s top five CO2-emitting countries in 2015.

Screen Shot 2018-03-15 at 12.26.41 PM

  1. What country emitted the largest amount of CO2 in the world?
  2. India emitted half as much CO2 as the United States.  What percentage of the world’s CO2 did India emit in 2015?
  3. European Union emitted twice as much CO2 as Russia.  What percentage of the world’s CO2 did European Union emit in 2015?
  4. Together, what percentage of the world’s CO2 did the rest of the countries emit?

Sources: Netherlands Environmental Assessment Agency“CO2 time series 1990-2015 per region/country”


Answer keys

1. China

2. 7%

3. 10%

4. 100 – 29 – 14 – 10 – 7 – 5 =  35%


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.

Screen Shot 2018-04-04 at 1.17.30 PM

  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