Dr.
Soltis came to our classroom to tell us about leaf
pigments.
His daughter is in our class! Pigments
are colors. He
taught us the names of leaf pigments.
The
green
pigment
is chlorophyll. The
yellow
and
orange
pigment
is carotenoid. The
red
pigment
is anthocyanin. The
brown pigment
is tanin.
Dr.
Soltis helped us do a leaf pigment experiment. First,
he told us that many pigments are there in a leaf but when
the leaf is making chlorophyll, the green chlorophyll covers
up the other pigments. Then,
he showed us how to rub a green leaf to get the green color
on a special kind of paper that you use to do pigment
science. Then
he gave each of us a leaf to make a pigment rubbing. Some
people in our class had green leaves. Some had red leaves
and some had yellow leaves.
Everyone
in our class did a leaf pigment rubbing. We
used the eraser end of a pencil to rub the leaf pigments
onto the special science paper. Dr.
Soltis helped us get good leaf pigment rubbings.
Here
is a picture of two red leaf rubbings on the special science
paper.
Dr.
Soltis put each paper with a leaf pigment rubbing in a test
tube with special science liquid. We
left the papers in the tubes for a while.
Here
is a picture of the paper when it is in the liquid in the
tube. When
the liquid gets soaked up in the paper, the pigments spread
out. You
can see how the darker green pigment is on the bottom of the
paper and above it you can see the lighter green and yellow
carotenoid pigments that were also in the green leaf.
Dr.
Soltis took the special papers out of the tubes and showed
us one where we could really see how the pigments spread
out!
Everyone
took their pigment papers home to show their families the
leaf pigments and to tell them about our experiment.
One
of our classmates made a drawing at home to tell his family
about the experiment. He
drew the leaf. He
drew the leaf rubbing on the special science
paper. He
drew a picture of the paper in the tube after the pigments
had separated. We
liked doing this leaf pigment experiment! Thank you Dr.
Soltis for helping us with science!!!!
Our
class did crayon leaf rubbings. We
had piles of leaves, newsprint paper, and crayons on our
tables. The
leaves were from maple, aspen and apple trees. First
we each chose some leaves to put under our paper. Then
we took a crayon and peeled off the paper. We
felt where the leaf was with our hand. Then
we used the side of a crayon and rubbed it on the paper
where there was a leaf underneath. We
used different colors of crayons on different leaves.
Here
are some leaf rubbings.
We
read books about Fall leaves. Here
are the books we liked reading. 1.
Fresh Fall Leaves written by Betsy Franco and
illustrated by Shari Halpern (Scholastic Inc.,
1994 2.
Why Do Leaves Change Color? by Betsy Maestro and
illustrated by Lorrta Krupinski 1994 3.
Tree written by David Burnie, Eyewitness Books 1988
pages 46 and47.
Two
second graders created this webpage with mentoring from the
teacher. First,
they learned how to edit digital images for the page. They
titled and trimmed each image, adjusted the image
brightness, and changed the image size. Second,
they learned to create the background for a page and decide
on the text font, size, and color. Third,
they learned how to create tables, insert images into the
table, and author text for each image. Fourth,
they learned how to revise and edit their text for
spellings, punctuation, syntax and meaning. They
took turns typing the text using their keyboarding skills.
They created this page during several hours of one school
day.
***All documents
on our classroom web pages are copyrighted. The text and images are
for educational use only. Please honor the integrity and original
ownership of all text, design and images. We request that you not
replicate the webpage designs nor publish the images and text without
permission. For permission contact Kristi Rennebohm Franz at
kfranz@psd267.wednet.edu
