Air pollution in Southeast Asia

Grade level: 6th grades

Skills: Percentages, fractions, and decimals

Related environmental issues: Air 

Smoke from agricultural fire killed over 100,000 people in Southeast Asia, including Indonesia, Malaysia, and Singapore in the fall of 2015. Smoke released from the farms that produce palm oil and timber for wood pulp and paper has caused air pollution for years in the region.

  1. The number of people who died from air pollution in 2006 was 38% of 100,000 in the region. How many people were killed from air pollution in 2006 in the region?

  2. Write the equivalent fraction and decimal for 38%.
  3. How many times more people died in the fall of 2015 than in 2006 from air pollution?  Answer in fractions in simplest form.

Source: Science Daily, 2016, “Smoke from 2015 Indonesian fires may have caused 100,000 premature deaths


Answer keys

1.  38,000

2. Fraction: 38/100   Decimal: 0.38

2. 2  12/19  (100,000/38,000 = 100/38 = 50/19 = 2  12/19)

What state releases the largest amount of carbon dioxide?

Grade level: 3rd – 4th grades

Skills: Bar graphs

Related environmental issues: Climate change

The United States along with most of the countries in the world depends on fossil fuels to meet energy needs. Power plants burn fossil fuels to produce electricty. Burning fossil fuels releases carbon dioxide into the atmosphere and it became the main cause of the climate change. The bar graph below shows the 10 states that release the largest amount of carbon dioxide through burning fossil fuels in the United States. Screen Shot 2016-05-15 at 7.23.18 AM

  1. Which state releases the largest amount of carbon dioxide in the United States?
  2. Which state releases as much carbon dioxide as Ohio?
  3. How many states releases more carbon dioxide than New York?
  4. How many states releases more than 200 but less than 300 million metric tons carbon dioxide?
  5. Texas releases  ____times more carbon dioxide than Florida. a) 2 b) 3 c) 4

Source: U.S. Energy Information Administration



Answer keys

1.  Texas

2. Illinois

3. 8 states

4. 4 states

5. b