Transcript Equivalent Fractions - Wichita State University

Equivalent Fractions
Presentation by Callie Carroll and Jo Dixon
www.dositey.com/worksheet/ frac2.html
mason.gmu.edu/~mmankus/talks/ frdecprt/frdecprt.htm
Equivalent
• Definition: equal in
amount or value
• Pieces are the same size
and shape ONLY they are
cut up differently.
• “Looks the same!”
• “Equivalent” looks a little
bit like the word “equal”
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designs/politica.html
I Want No Part of Fractions
I want no part of fractions
They onl y bring me grief.
Half the time on the quarter quiz
I can't explain what one eighth is.
It took math teachers to decide
That we'll divide them side by side.
They say it works, I don't know why
You turn one over and multiply.
I think the world's worst agitator
Is the smallest common denominator.
You need 'em to add, it drives you
silly,
But multiplying is willy nilly.
I may be bad but here's the topper:
They say my fractions are improper.
My dreams of success are cast asunder-My number above is bigger than under.
Tell me, folks, ain't it absurd?
One half is bigger than one third!
Why, back in first grade we all knew:
A three is larger than a two.
Math teachers find it so amusing
That learning fractions is confusing.
Why, we could learn this stuff real fine
If they'd take out that silly line.
—Grandpa Tucker
Copyright ©1998 by Bob Tucker
www.night.net/tucker/ fractions.html-ss
Review
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Halves
Thirds
Fourths
Fifths
Sixths
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Explanation
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www.harcourtschool.com/.../gr3/
equivalent_fractions3.htm
Common denominator
Factors
Patterns
Draw a picture
Fraction bars
www.ricksmath.com/ fractip.html
www.ricksmath.com/ fractip.html
Example
• Equivalent fractions can be found in toys you have
at home!
www.croydonmaths.org.uk/beam.htm
Example
• Shapes can be divided into fractions many
different ways. Can you find the equivalent
fractions shown in this picture?
dev1.epsb.edmonton.ab.ca/math14_Jim/
math8/strand1/1201.htm
Example
• Hint: Common factors
• How are these fractions equivalent?
www.mathstutor.com/ Fractions.htm
Example
• Coloring the pieces may help you see the
equivalent fractions.
www.coolmath4kids.com/lessons/ fractions4_main.htm
Real World Connection
• Fractions are all around us!
• Can you think of an example of
fractions in the world around you?
www.ed.gov/pubs/EarlyMath/ whatis.html
www.soon.org.uk/humor/ illusion.htm
Think about it!
• What would the world
be like without
fractions?