Krulwich, Robert. "The Earth Has Lungs. Watch Them Breathe." Science. May 04, 2021. Accessed May & June 2021. https://www.nationalgeographic.com/science/article/the-earth-has-lungs-watch-them-breathe .
This website contains a graphic that shows how the concentration of carbon dioxide changes seasonally. In the visualization, students can see that the concentration of carbon dioxide is low during the summer months, but increases significantly in the fall and winter.
"SVS: Global Temperature Anomalies from 1880 to 2020." NASA. Accessed May & June 2021 https://svs.gsfc.nasa.gov/4882#30730 .
This visualization shows how temperature anomalies have increased over the last century. It offers an easy way for students to see the changing temperature over time.
"What Is the Greenhouse Effect?" NASA. May 10, 2021. Accessed April & May 2021. https://climatekids.nasa.gov/greenhouse-effect/ .
This site offers a simple explanation of how the greenhouse effect increases the temperature of the earth.
"Meet the Greenhouse Gases!" NASA. Accessed July 02, 2021. https://climatekids.nasa.gov/greenhouse-cards/.
These cards explain the six main greenhouse gases, including why they are needed in our atmosphere and what the hazards of having too many are. They are used in lesson 2 to introduce the greenhouse gases to students.