17" x 11" piece of
white construction paper | grass
markers, crayons or
It's best to do this one in the
morning in the summertime, when the dew is still on the grass:
Put the piece of white construction
paper on the grass outside.
Step with one foot onto the paper. Step
down firmly, and push the bottom of the paper into the grass. Try NOT to move
your foot around on the paper.
Now lift up the paper. What do you
You should see a green footprint!
That's because the pressure of your foot on the paper collected some special
green stuff from the grass.
The green stuff is called chlorophyll
(KLOR oh fill). It is a pigment - a substance that gives something color. For
example, you have pigment in your skin that gives it a certain shade of tan or
Well, all plants - all flowers, all
trees, all members of the plant family - have chlorophyll. That's why they are
Chlorophyll is vitally important in
the process that plants use to make their own food. They use carbon dioxide,
which is part of our air, as well as water (usually rain) and sunlight. The
chlorophyll manufactures the food the plant needs with these ingredients.
This food-manufacturing process is
called photosynthesis (fo to SIN thuh sis).
If plants didn't have chlorophyll,
they couldn't make their own food, and then since humans and animals rely
heavily on plants for food, WE wouldn't have any food, either. And that would
be a MAJOR BUMMER!
Now, on the construction paper around
your footprint, draw a picture of a Jolly Green Giant. Add some pictures of
flowers, trees, plants and leaves that depend on chlorophyll.