| 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. |
