SCIENCE ACTIVITIES:CLASSROOM PROJECTS AND CURRICULUM IDEAS, vol.51, no.2, pp.33-43, 2014 (ESCI)
The purposes of this activity are to help middle school students understand the carbon cycle and realize how human activities affect the carbon cycle. This activity consists of two parts. The first part of the activity focuses on the carbon cycle, especially before the Industrial Revolution, while the second part of the activity focuses on how human activities affect the carbon cycle after the Industrial Revolution, when people started excessively burning fossil fuels.