Fraction Basics
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Transcript of Fraction Basics
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Fraction Basics
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Fraction Extension
• Equivalent fractions with pattern blocks and paper folding
• Mixed and Improper fractions• Percent of shapes• Percent increase or decrease• Multiplication and division of fractions
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Equivalent Fractions
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EquivalentFractions withPaper Folding
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NumeratorDenominator
Number of PiecesNumber of Pieces in a whole
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If a red isosceles triangle represents,
What shape represents a whole?
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If a yellow hexagon represents 1 ½ , what does a whole look like?
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Improper Fractions
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Improper Fractions
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If a red isosceles triangle represents a whole, ,
What shape represents an decrease of 33%?
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Adding FractionsCommon
DenominatorNo Problem
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Try to Model this Addition Problem
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Adding Fractions with Paper Folding
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If a whole is 5 yellow hexagons
What shape represents 1/3 of the whole?
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What Are We Really Doing as a Fraction Operation?
• If a whole is 5 yellow hexagons, what shape represents 1/3 of the whole?
• What is 5 divided by 3?• What is 1/3 of 5?• What is 1/3 X 5?• I have 5 cookies how much will each person
get?• What is 33% of 5?
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If a whole is 5 yellow hexagons
What shape represents 2/3 of the whole?
or
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What Are We Really Doing as a Fraction Operation?
• If a whole is 5 yellow hexagons, what shape represents 2/3 of the whole?
• What is 2/3 of 5?• What is 2/3 X 5?• What is 67% of 5?• What is 1/3 taken away from 5?• What is 33% taken off of 5?
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Try to Model this Multiplication Problem
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Try to Model this Multiplication Problem
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Dividing Fraction
• What is 2 whole divided equally into 3 groups?• Show that it makes since with repeated addition 2/3
+ 2/3 + 2/3• What is 2 divided by 1/3?• What is 2 divided by 2/3?• What is 4 divided by 1 ½• What is 4 divided by 1 1/3? = 3 • What is 5 divided by 1 1/3 = 3 ¾• What is 2 ½ divided by 2/3
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White Board Feedback Strategy
Thanks to Loni Watson, Seward
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WhiteOut
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A Duck
• The yellow hexagon is what part of the duck?
• The green equilateral triangle is what part of the duck?
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The yellow hexagons are what part of the whole?
If this shape is represents a whole,
The blue rhombi are what part of the whole?The green equilateral triangles are what part of the whole?