Which county generated more solar power – the United States or China?

Grade level:  3rd- 5th grades

Skills: Circle graph

Related environmental issues: Energy

The circle graph below shows five countries that generated the largest amount of solar power, electricity generated from solar energy, in the world in 2017.


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  1. What country generated the largest amount of solar power in the world?
  2. What percentage did the United States make up?
  3. What country generated twice as much solar power as Italy?
  4. Did China make up more or less than the rest of the world combined?

Sources: REN 21, 2018



Answer keys

  1. China
  2. 13%
  3. Germany
  4. more

Which endangered animal is heavier, Tiger or Leopard?

Grade level: 4th – 5th grades

Skills: Bar graphs

Related environmental issues: Biodiversity

As many as 26,000 species are threatened with extinction in the world because people have changed their habitats, and they lost their homes. The bar graph below shows the weight of some of the most endangered  animals in the world.

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1.Among the endangered animals, which animal weighs the most?

2.Which is heavier, Amur Leopard or Sumatran Orangutan?

3.Which endangered animal weighs twice as much as Hawksbill Sea Turtle?




Answer keys


1.Mountain Gorilla

2.Sumatran Orangutan

3.South China Tiger