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 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.