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.