PURPOSE:
To produce an icosahedron (20-sided structure) showing information about
a chosen element. Grades will be
determined from the creativity exhibited, difficulty of the element chosen, and
satisfactory completion of requirements.
You will have to explain what you have learned about your element to your
classmates. No partners and you
each have to choose your own element.
This will be worth 1/2 of a test grade.
MATERIALS:
Element information; material chosen for use in constructing element ball
(colored paper, construction paper , etc) ; stapler and/or glue, markers, pens,
crayons, etc.; decorations; patterns.
Template: link
PROCEDURES:
1.Using the circle pattern, cut 20 circles
from the material chosen to construct the element ball.
2.
Using the triangle pattern, trace the triangle inside the circle.
3.
Inside 19 of the triangle write a piece of information or a properties
about the element. Decorate the
circles or triangles making them as colorful as you can.
Be sure that all written information is INSIDE the triangle area and is
written clearly. (you may want to
use the computer)
Write your name, class period and element
name on the remaining triangle.
4.
Begin assembly of the element ball by folding up the curved sides
extending beyond the triangle on all 20 of the circles. See figure 1.
5.
Select 5 of the triangles and place them in a circle with the top points
toward the center, like pieces of a sliced pie. See Figure 2.
6.
Staple or glue the curved, upright edges at the creases.
Once stapled and/or glued, it should resemble a hat.
This will be the top of the ball.
7.
Repeat steps 5 and 6 to make the bottom of the ball.
8.
To make the center of the ball, take the remaining 10 triangle and place
them in a straight row, with alternating point up and point down.
Staple and/or glue the creases. See Figure 3.
9.
Bring the ends of the row of the triangle together and staple or glue the
two end creases together to form a ring.
10. Set the ring up on a table and place the
top on the ring, matching up the curved tabs.
Staple and/or glue at the creases.
11.
Turn the assembly over and attach the bottom in a similar fashion.
12.
Punch one hole in on tab, tie on a piece of light string or yarn about 12
inches long.
13.
Prepare a short presentation of your element, to be shared in class.