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Equivalent Fractions
Presentation by Callie Carroll and Jo Dixonwww.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”
www.midcoast.com/~martucci/flags/ designs/politica.html
I Want No Part of Fractions
I want no part of fractionsThey onl y bring me grief.Half the time on the quarter quizI can't explain what one eighth is.
It took math teachers to decideThat we'll divide them side by side.They say it works, I don't know whyYou turn one over and multiply.
I think the world's worst agitatorIs 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 amusingThat learning fractions is confusing.Why, we could learn this stuff real fineIf they'd take out that silly line.
—Grandpa TuckerCopyright ©1998 by Bob Tucker
www.night.net/tucker/ fractions.html-ss
Review
• Halves
• Thirds
• Fourths
• Fifths
• Sixths
www.busy-bees.com.au/ JIGSAWPUZZLES3years+.html
Explanation
• Common denominator• Factors• Patterns• Draw a picture• Fraction bars
www.harcourtschool.com/.../gr3/ equivalent_fractions3.htm
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