Students will learn the products and reactants of photosynthesis and respiration. They will generate a circular diagram showing the cycle of carbon through carbon dioxide and sugars (the hypothesis). They will generate predictions from this hypothesis that refer to specific treatments in the experiment they will set up. They will set up an experiment with germinating bean seeds in petri plates (with or without water, in the light or in the dark), collect data over two weeks, and analyze the results graphically and verbally.
At the conclusion of the lesson, students will be able to:
- Explain that respiration causes the loss of dry biomass (sugars)
- Explain that photosynthesis causes the gain of dry biomass
- Understand that carbon (carbohydrates) from carbon dioxide in the atmosphere makes up most of the dry mass of plants.
- Lesson plan (.doc)
- Outline of activities (.doc)
- Pre-assessment (.doc)
- Student lab report (.doc)
- Student worksheet (.doc)
Lesson created by Emily Grman, 2008