Photosynthesis
Write On
Fourth Grade
Learner Expectation
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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.
In this activity you will:
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Learn about the process of photosynthesis
Write a paragraph describing how plants
use photosynthesis to live and grow
Plants need energy to grow
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Plants need energy to grow
Plants get energy from the sun
Plants use energy to carry on the process
of photosynthesis
Chlorophyll is needed for
photosynthesis
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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
Plants need air for photosynthesis
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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
Plants need water for
photosynthesis
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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
Plants need sunlight for
photosynthesis
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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
Photosynthesis helps plants live
and grow!
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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
Writing Activity
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Explain how plants use photosynthesis to
live and grow.