The balance of nature can be a wondrous thing! With the 19th lesson of the 21-part series on systems, learners explore the cycle of photosynthesis and cellular respiration using a lab-based activity. Groups set up different test tubes with carbon dioxide and oxygen indicator and snails. Their observations lead to an understanding of the reverse processes. 

Concepts

photosynthesis, cellular respiration

Show More Show Less

Additional Tags

science

Show More Show Less

Instructional Ideas

• Use a Venn diagram to compare and contrast photosynthesis and cellular respiration
• Add a test tube with water plants to the experiment for additional observational data

Classroom Considerations

• Allow at least an hour between the two parts of the activity for reactions to occur

Pros

• Includes an answer key of expected responses
• Gives individuals a concrete reference for a complex concept

Cons

• None