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What is a Circle?
Technically speaking, a circle
is a closed plane curve of which
all points (edges) are at an equal
distance from the center. Talk
about circles and curves and
then use hands-on activities to
help kids understand some sim-
ple concepts about them. Begin
by giving each student a 24-inch
length of yarn, a ruler, and a
counter (penny, piece of cereal,
etc.). Invite students to work
with the yarn to make a curve on
their desk. As you check out the
results, you may find simple
curves where the yarn never
crosses, simple closed curves
where the yarn meets but does
not cross, or even more compli-
cated curves where the line
crosses one or more times. Next
ask children to form a circle with
the yarn. Instruct them to place
the counter in the center and
measure with a ruler to check
the distance from the counter to
the edge of the circle. Remind
children that to make a circle,
the measurement from the cen-
ter to the edge must always be
the same!
Circle Movements
Kids will have fun using large
motor activities to discover more
about circles. Begin by moving
the desks aside or going outside.
Ask kids to stand an arm’s
length away from each other,
hold both arms straight out, and
make small circles using their
arms. Then try large arm circles.
Next ask children to raise their
hands over their head and make
a circle with their arms. Finally,
have everyone join hands to
make a circle. Ask kids to make
the smallest circle possible with-
out excluding anyone and make
the largest circle possible with
all hands touching. Next divide
children into two groups to make
a circle within a circle. And try
some activities with curves by
having students stand in a line
and join hands. Make several
simple curves, simple closed
curves, and complex curves.
simple curves:
simple closed curves:
complex curve:
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OPYCAT
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Circle Search
Circles are everywhere! Kids
will be interested in going on a
“circle search” to see how many
circles they’re able to find at
home. Begin by making a handy
circle holder out of two paper
plates. Staple the plates togeth-
er, leaving an opening at the top
for inserting circles. Glue a circle
search label to the outside and
ask kids to decorate the holder.
Ask everyone to fill the circle
holder with different circles they
can find around home…penny,
button, rubber band, jar lid,
cracker, cereal, etc. Challenge
each person to find at least five.
When kids
return with
their circles,
take time to
share the
results and
display
them on a
very large
paper cir-
cle…Circles
All Around!
Making Circles
Older kids will enjoy learning
about a special instrument, a
compass, that creates circles.
Borrow a set of compasses from
one of the upper grades and
demonstrate how they’re used to
make circles of varying sizes.
Stress the safety precautions
which must be taken when using
this pointy instrument. Then
allow time for responsible stu-
dents to create their own circles
with a compass. Show kids how
to use the same principle to
make a circle of any size with a
string and pencil. Begin by fold-
ing a very large square of paper
in half lengthwise and then
crosswise. Open the paper to
locate the center point and make
a dot. Ask one person to hold the
string on the dot and another
person to stretch the string to
the outer edge of the paper, cut-
ting off the excess string. Tie a
pencil to one end of the string.
Now make a circle by having one
child hold the end of the string
directly on the center point and
asking another child to hold the
string with the pencil tightly and
walk around to make the circle.
in the cross section of a tree. Are
all of them
perfect
circles? Some
circles in nature are formed
when a flat surface is affected by
a force acting equally in all direc-
tions such as a drop of water.
Drop a pebble into a pan of
water and observe the results.
Students will notice ripples
caused by the impact of the peb-
ble on the water. This impact
sends out a wave spreading
equally in all directions. The rip-
ples eventually die out as the
energy supplied by the pebble is
used up. Students will have fun
working with a partner to make
and observe water ripples.
Fun with Circles
Have fun with “roundness”
as you plan activities with cir-
cles, curves, and spirals.
• Computer Circles
Kids will enjoy using some of the
computer drawing programs to
draw circles. KidPix2
®
is espe-
cially fun!
• Transportation Circles
It’s surprising how many circles
can be found in different modes
of transportation. Encourage
kids to brainstorm a list of trans-
portation circles…tires, steering
wheels, dials, knobs, hub caps,
headlights, etc. Then invite stu-
dents to draw a favorite vehicle
or means of transportation and
see how many circles they can
include.
• Circle Jewelry
A necklace is already a circle,
but kids can create necklaces
using circular shapes, too. Give
each child a length of string or
yarn and invite them to make a
necklace with circular cereals.
Circle Quilt
Circle designs will be fun to
make as you give each class
member a sheet of paper. Gather
a collection of circle patterns and
templates in a variety of sizes…
coins, paper cups, plastic plates
and bowls, jar lids, etc. Using
markers or crayons, instruct
students to fill the page with cir-
cles to create a colorful design.
Cover a bulletin board with
brightly colored paper and attach
the designs, leaving a border
between each sheet to create the
look of a quilt. Add the title “Our
Circle Quilt.”
Plan some extra fun using this
same technique to make giant
chalk circles on the playground.
Then play some circle games.
Circles in Nature
Circles, thought to be the
perfect shape, are commonly
found in nature. Challenge stu-
dents to think of circles found in
nature…spots found on animals
such as butterflies, frogs, or
ladybugs, a halo around the
moon, or the annual rings found
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OPYCAT
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• Spiral Art
If you have access to spiral art
kits such as Spirograph
®
, set up
a center in your room where
children may spend free time
creating works of art.
• Paper Spirals
A spiral is an open-ended curve
that coils around a given point.
Talk about where kids might see
spirals and brainstorm a
list…springs, telephone cords,
water going down a drain, the
eye of a tornado, a spiral stair-
case, a screw, and even a
Slinky
®
. Draw a spiral pattern,
duplicate a copy for each stu-
dent, and give kids practice cut-
ting around and around to rein-
force the spiral con-
cept. Make the spi-
ral move by attach-
ing a length of
string to the center
of the spiral and
holding it over a
lamp which has
been turned on.
Explain that the
rising warm air
created by the heat
of the lamp makes
the spiral
turn.
Quill Art Wreath
Continue your study of cir-
cles by making a sensational
wreath using quill art. A wreath
is a circle which represents the
on-going cycle of life. For each
wreath you will need a 9-inch
paper plate, pencil, scissors,
glue, 3/4” strips of green paper,
and a 36” length of colored crepe
paper. Follow the steps below to
make the wreath.
1. Curl each green strip around
a pencil. Slip the curl off the
pencil and glue the loose end
down. Make enough curls to
fill the wreath.
1. Slip the longer ends of each
paper clip into the openings at
the ends of the straw, making
sure the clips are in line fac-
ing each other.
2. Wind the strips of paper into
circles so that the ends over-
lap. Slip the overlapped ends
of each strip under the paper
clip at each end so the glider
looks like the illustration.
Try a test flight…holding the
center of the straw, give the glid-
er a firm push, not a throw.
Watch it go!
2. Carefully poke the scissors
into the paper plate and cut
out the center circle.
3. Work on only a small section
of the wreath at a time. Cover
the small area with glue and
press a curl on to the plate.
Press curls close to each other
to cover the area. Small dabs
of glue between each curl will
secure them.
4. When the entire plate is
covered with curls, let it dry.
Circle Snacktime
Plan to enjoy some circle
snacks by asking kids to help in
the creation of a grand smorgas-
bord. Brainstorm all the choices
we have, from fruit slices to
crackers, cereal, cookies, or fruit
roll cut-outs. Students and their
families will surely think of
more. Write the date and any
other information about your
Circle Smorgasbord on the
reproducible pattern, duplicate,
and send it home with the kids.
On your special day display your
circular treats on plates for
everyone to observe. Now round
up the kids…it’s time to feast!
Circle Books
So Many Circles, So Many Squares
by Tana Hoban (Greenwillow)
Circle City
by Dana Rau (Children’s Press)
Circles
by Sarah Schuette (Pebble)
Circles
by Jan Kottke (Children’s Press)
• Pixels
Use a high-powered magnifying
glass to help kids see the many
colored dots or pixels in the col-
ored pictures of your newspa-
per’s comic section. Explain that
it takes thousands, even millions
of pixels to create an image. A
chapter called “Dots, Dots, and
More Dots” in
Anno’s Math
Games II
by Mitsumasa Anno
(Putnam & Grosset) shows pat-
terns in dots, typed letters,
seeds, and pen points arranged
to create familiar images.
Make a crepe paper bow and
attach it to the front of the
wreath.
Ring-a-ding Glider
Here’s a toy that uses cir-
cles—a circle wing glider. To
make each glider you will need a
straw, two paper clips, one 1/2”
x 11” strip of copy paper, and
one 3/4” x 11” strip of copy
paper. Follow these steps:
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OPYCAT
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CIRCLE SEARCH
Label
Staple two paper plates
together to make a holder
for circle samples. Leave
an opening at the top for
inserting the circles and
glue the label in the center
of one of the plates. Ask
kids to write their name on
the holder and decorate it
with crayons and markers.
C
We’ve planned a
CIRCLE
SMORGASBORD!
Please bring something to eat
that is round in shape for our
circle smorgasbord on
CIRCLE
Smorgasbord
Note
Write the date and any other
information about your Circle
Smorgasbord on the pattern
at left, duplicate, and send it
home with the kids.
date
THANK YOU!
Nov/Dec 98
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OPYCAT
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