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MATH LAB
Activity 1
PREPARE
• An open spread of newspaper
will work best for this lab.
Newspaper works best because
it is thin and large enough to
be folded many times.
TEACH
• This lab should be completed
individually.
• You can select a couple
of students to follow the
steps in the lab, but fold
the newspaper in half using
the direction that the rest
of the class does not use
(folding vertically instead of
horizontally). This will allow
for additional discussion in the
follow up of the activity.
FOLLOW-UP
• Have a class discuss about how
many layers are involved in
Steps 9 and 10. Ask students
to think about real-world
applications that model
geometric sequences, such
as this. Ask students to name
the type of function involved.
(exponential)
• If you had a students fold their
newspapers differently that the
rest of the class, discuss if they
were able to fold the same
number of times as everyone
else. If they were able to
fold more or less, discuss the
implications this would have
on other applications such as
bacteria growth, or compound
interest.
3 5
Math Lab Notes and Solutions
7. geometric sequence; the ratio between consecutive terms in the sequence
is always 2
420 Chapter 9 Sequences and Series