Students compare photosynthesis and cellular respiration in terms of reactants and products. They observe the use of bromothymol blue to test for the presence of oxygen or carbon dioxide. Students measure lung capacity and model the action of the diaphragm.

Student Resources

• 5.1 Vocabulary
• 5.2 Photosynthesis and Cellular Respiration
• 5.3 Measuring Lung Capacity
• 5.4 Organs of the Respiratory System
• 5.5 Section 5 Assessment

Learn by Reading

For additional content-area reading, check out the Houghton Mifflin Science eBook: Grade 5, Unit A, page 35.