Photosynthesis

1. Photosynthesis Write On Fourth Grade

2. Learner Expectation • Content Standard: 3.0 Food Production and Energy for Life • The student will study the basic parts of plants, investigate how plants produce food, and discover that plants and animals use food to sustain life. • Learning Expectations: • 3.1 Realize that plants and animals use food for energy. • 3.2 Recognize the function of specific structures in organisms that allow them to obtain and use energy.

3. In this activity you will: • Learn about the process of photosynthesis • Write a paragraph describing how plants use photosynthesis to live and grow

4. Plants need energy to grow • Plants need energy to grow • Plants get energy from the sun • Plants use energy to carry on the process of photosynthesis

5. Chlorophyll is needed for photosynthesis • Chlorophyll is a green material in plants that traps light energy • Chlorophyll is located in long, green cells • Plants get their green color from chlorophyll • Chlorophyll is needed for photosynthesis

6. Plants need air for photosynthesis • Plants have tiny holes in the bottom of each leaf • The tiny holes let air go in and out of the leaf • Plants use a gas in the air called carbon dioxide • Plants release oxygen back into the air

7. Plants need water for photosynthesis • Plants get water from the soil • Roots bring water from the soil to the plant • Veins in each leaf carry water throughout the plan • Water is needed for the cells of the plant to carry on photosynthesis

8. Plants need sunlight for photosynthesis • Cells in the plant trap light energy from the sun • Light energy helps change carbon dioxide and water to a simple sugar in plants • The plant uses the simple sugars to help it grow

9. Photosynthesis helps plants live and grow! • Photosynthesis is the process by which plants trap the sun’s energy • Plants use the sun’s energy to change carbon dioxide and water into sugar

10. Writing Activity • Explain how plants use photosynthesis to live and grow.