1. Stand the glass on a piece
of white card and draw around the
base of the glass to make two white
circles. Then draw a circle on the
piece of cardboard to make one cardboard
2. Carefully cut out all three
3. Divide the circle into
several equal-sized sections (so
that it looks like pie pieces) using
a ruler for straight lines and color
each pie section with a different
color. Do this on both of
your white circles.
4. Color in each pie section
with a different color. Do
this on both of you white circles.
5. Glue the two colored circles
on each side of the cardboard so
that the pretty colors can be seen
from both sides of the cardboard
6. Carefully make two small
holes (use a compass tip or pencil
tip) equally from the center of
the card (circle) around 1/2 inch
and just big enough to thread the
string through the holes (use the
pencil tip to guide the string in
if it doesn't go through smoothly).
7. Thread the string through both
holes and then tie a knot at the
8. Pull the string so that
it is positioned evenly on either
side of the spinner.
9. Place your pointer fingers
inside the string at each end.
Slowly make a circular motion with
both hands so that you flick the
spinner around in this circular
motion until the string is twisted.
10. Stop the circular motion
and then pull your hands apart and
then back in (like you are playing
an accordion but with a yoyo action)
causing the spinner to spin very
Step 2 & 3
Step 6 & 7
Step 8 & 9
What color do you
see? Make lots of spinners
using different combinations of
colors. What colors do you
see when you spin them?
When the spinner spins
really fast you see light reflected
from all its colors, but your brain
cannot separate them. So you
see a mixture of all colors, which
is white. Your spinner may
look grey to you because your colors
are not pure.
of the Rainbow