#10 - Building a Geodesic
experiments must be done in the presence of a parent or teacher.
domes are made of interlocking geometric shapes - often triangles,
pentagons, and hexagons-
to form a three dimensional shape of incredible strength.
a plane figure with five sides and angles.
a plane figure with six sides and angles.
or broom handle
up a sheet of newspaper. Roll the newspaper around the doweling
diagonally from one corner to the other.
a piece of tape and stick it to something (preferably not your
head) for a minute. Hold the newspaper tube in one hand and gently
out the dowel with your other hand. If you rolled the newspaper
tightly, you may need to wiggle and twist the dowel a bit. Use
of tape to keep the newspaper tube together.
the tube to length. [Note: The ends of the tube are not very stiff.
To make a stronger tube, make the tube the correct length by cutting
off both ends.] You need a total of 35 newspaper tubes measuring
71 cm and
30 tubes measuring 66 cm. So get busy rolling, measuring, and
Keep the two lengths separated.
the marker pen to put a mark on the longer newspaper tubes. Now
you'll be able to tell the two lengths apart easily. From now
on, we will
call the marked tubes As, the unmarked tubes Bs.
10 As in a circle.
the ends of two tubes by 2 cm and staple together. Repeat this
to form the base of the dome.
alternating pairs of As and Bs radiating out from the central
up two of the As and form a triangle with them and one of the
from the circle. Staple the joints firmly.
the same thing with the rest of the tube pairs. You should end
with a circle of triangles poking into the air. Tall triangles
alternate with short triangles.
the triangles by stapling a row of Bs across the top.
point where four Bs come together, staple on another B pointing
the Bs by using two As, one attached to each adjacent joint.
the tubes by stapling a row of As across the top.
the dome by adding the last five Bs. These tubes come from the
five joints and meet in the middle.
to build a geodesic dome: a more complete description with pictures.
should pay attention to the design characteristics that make this
structure so strong. Students should also consider some of the difficulties
in completing this project, and what would make it run more smoothly.
Name two things in our world that employ the use of the geodesic dome
What is the name of the individual that popularized the geodesic
dome design? What else do you know about this individual?
Geodesic domes join two other forms of pure carbon. What are these
other two forms?
What is a buckyball?
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