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OBJECTIVES:
Fax is short for facsimile which means a copy or reproduction. A
fax machine uses a sensor to "read" the black and white sections on
paper and send that information to another fax machine.
In this activity you will play a game and draw a picture to learn
how a fax machine sends visual information
over phone lines.
STEPS TO FOLLOW:
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For the lesson presenter: you may want to label your own graph paper
or use the prepared graph paper (Chart 1.
Also, you may want to draw your own picture
or use the prepared pictures (Chart 2
and Chart 3)
supplied in this lesson.
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Review the information in the
background section. Ask yourself
how a facsimile machine works. How can visual information be
sent over the phone lines? Discuss this with your classmates.
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Each student uses a copy of the graph paper.
Alternately, to make your own chart draw a letter above
each column on the graph paper, starting with A,
and a number in each row, starting with 1.
The result should be similar to a spreadsheet. Each square
on the graph paper has an address corresponding to its row
and column, like A6 or F9.
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MATERIALS:
(Optional) Chart 2
(Optional) Chart 3
For each student:
Graph Paper or Chart 1
Fine Point Marker or Pencil
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The leader draws a simple picture on their
graph paper by filling in the squares or leaving them blank.
Alternately, the leader can use one of the samples
(Chart 2 or
Chart 3).
Do not let the other students see the picture!
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The leader instructs the other students to take turns calling out
addresses of squares in order. Based on the color of
the square in the leader's picture, the leader
should answer black or white. If the answer is black,
the other students should color in the square on their
copy. If the answer is white, they should leave the square blank.
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The fax is completed when all the squares have been
either colored or left blank. At this point, all
the students should have a facsimile of the leader's picture.
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