| OBJECTIVES: |
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This activity features
some quantitative reasoning. The student will be able to: |
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produce equivalent forms of rational
numbers (fractions). |
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describe the relationship between two
ratios in fraction form. |
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identify common factors of a set of
whole numbers. |
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recognize the greatest common factors
(GCF) . |
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use the concept of GCF in reducing
fractions to lowest terms. |
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!!How low can
you go!! Be the fastest in finding the
GCF and lowest term. Solve fraction division problems and reduce the
answers to lowest terms. The first team with 30
points WINS! |
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| MATERIALS
NEEDED: |
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FracDivide
Activity Booklet |
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FracDivide
sets |
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Paper |
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Pen or Pencil |
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Timer or Stopwatch |
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Optional:
PieCulator
or BarCulator |
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| DIRECTIONS: |
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1. |
The leader divides the
players in teams of 2-5. The leader designates one student as a score
and time keeper. |
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2. |
The leader chooses
problems from the FracDivide
Activity Booklet and writes them on
the board. The play begins. |
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3. |
Each team has 1 minute to
find the correct GCF for the two fractions and then solve for the
product. The students work the problem using the FracDivide.
The answer must be in lowest terms. The PieCulator
or BarCulator
can be used to reduce the fractions to lowest terms. |
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4. |
The leader awards the
team 1 point for the correct GCF and 4 points for the final
lowest term. No credit can be given without the GCF as part of their
answer. |
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| SUGGESTIONS: |
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1. |
The leader can refer to
pages 3 and 4 in the Fraction Fun
Activity Booklet for
information on using the BarCulator
and PieCulator
in conjunction with teaching the Greatest Common Factor and lowest
terms. |
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2. |
From the FracDivide
Activity Booklet, the leader can
choose the following problems: page 6, nopqrs;
page 7-12, jklmnopqrs.
All these problems can be reduced to lowest terms. |
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| EXTENSIONS: |
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1. |
The leader can also make
the activity more interesting by choosing a mixed arrangement of
problems in the FracDivide
Activity Booklet.
The leader can choose problems that can or cannot be reduced to lowest
terms. |
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2. |
Even when the answer
cannot be reduced, the teams must show a GCF of at least 1. |
