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Best Buys, Ratios, and Rates: Addition and Subtraction of Fractions (Contexts for Learning Mathematics, Grades 4-6: Investigating Fractions, Decimals, and Percents, Band 4) - Fosnot, Catherine Twomey, Jacob, William
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Fosnot, Catherine Twomey, Jacob, William:

Best Buys, Ratios, and Rates: Addition and Subtraction of Fractions (Contexts for Learning Mathematics, Grades 4-6: Investigating Fractions, Decimals, and Percents, Band 4) - Paperback

2008, ISBN: 9780325010267

FIRSTHAND BOOKS, Taschenbuch, Auflage: Illustrated, 78 Seiten, Publiziert: 2008-03-05T00:00:01Z, Produktgruppe: Buch, Hersteller-Nr.: black & white illustrations, maps, figur, 0.25 kg, Bu… More...

Gut Shipping costs:Gewöhnlich versandfertig in 6 bis 7 Tagen. Die angegebenen Versandkosten können von den tatsächlichen Kosten abweichen. (EUR 3.00) Paper Cavalier Deutschland
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Best Buys, Ratios, and Rates: Addition and Subtraction of Fractions (Contexts for Learning Mathematics, Grades 4-6: Investigating Fractions, Decimals, and Percents, Band 4) - Fosnot, Catherine Twomey, Jacob, William
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Fosnot, Catherine Twomey, Jacob, William:

Best Buys, Ratios, and Rates: Addition and Subtraction of Fractions (Contexts for Learning Mathematics, Grades 4-6: Investigating Fractions, Decimals, and Percents, Band 4) - Paperback

2008, ISBN: 9780325010267

FIRSTHAND BOOKS, Taschenbuch, Auflage: Illustrated, 78 Seiten, Publiziert: 2008-03-05T00:00:01Z, Produktgruppe: Buch, Hersteller-Nr.: black & white illustrations, maps, figur, 0.25 kg, Bu… More...

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Best Buys, Ratios, and Rates - Catherine Twomey Fosnot; William Jacob
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Catherine Twomey Fosnot; William Jacob:
Best Buys, Ratios, and Rates - Paperback

2008

ISBN: 9780325010267

Addition and Subtraction of Fractions, Buch, Softcover, [PU: Heinemann Educational Books,U.S.], Heinemann Educational Books,U.S., 2008

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Best Buys, Ratios, and Rates: Addition and Subtraction of Fractions (Contexts for Learning Mathematics) - Fosnot, Catherine Twomey; Jacob, William
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Fosnot, Catherine Twomey; Jacob, William:
Best Buys, Ratios, and Rates: Addition and Subtraction of Fractions (Contexts for Learning Mathematics) - Paperback

2008, ISBN: 0325010269

[EAN: 9780325010267], New book, [PU: FirstHand], Books

NEW BOOK. Shipping costs: EUR 14.77 Irish Booksellers, Portland, ME, U.S.A. [57531671] [Rating: 5 (of 5)]
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Fosnot, Catherine Twomey; Jacob, William:
Best Buys, Ratios, and Rates: Addition and Subtraction of Fractions (Contexts for Learning Mathematics) - Paperback

2008, ISBN: 9780325010267

Paperback, Used, good, 1824264., [PU: FirstHand]

Shipping costs: EUR 0.00 Memphis, TN, One Stop Shop Bookstore
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Best Buys, Ratios, and Rates: Addition and Subtraction of Fractions (Contexts for Learning Mathematics, Grades 4-6: Investigating Fractions, Decimals, and Percents, Band 4)
Author:
Title:
ISBN:

9780325010267


Best Buys, Ratios, and Rates: Addition and Subtraction of Fractions is one of five units in the Contexts for Learning Mathematics' Investigating Fractions, Decimals, and Percents (4 - 6) 
 
The focus of this unit is the development of equivalence of fractions, proportional reasoning, and rates. It begins with a comparison of the cost of cat food at two stores: Bob's Best Buys where it is on sale, $15 for 12 cans, and Maria's Pet Emporium where it is on sale, $23 for 20 cans. Several important ideas and representations develop as students explore this problem, among them finding ways to determine the cost of a common numbers of cans for comparison and the use of the ratio table to represent their proportional reasoning about the context. The development of the ratio table is further supported in the next investigation as students work to determine the cost of several different amounts of bird seed sold by weight. As the unit progresses, proportional reasoning is once again the focus as students develop recipes for a variety of containers, using the recipe of Maria's gourmet puppy snack mix.
 
In the second week the double number is introduced for computation as students investigate the readings on a farm truck's gas tank over the course of trips to several neighboring farms to pick up produce. A trip across the Pennsylvania Turnpike is also explored.
 
This unit also includes several minilessons for addition and subtraction of fractions. Strings of related problems are used initially using money and clock models. Double number lines are introduced later in the unit to enable students to develop generalizable, strategies for addition and subtraction. This model supports students to choose a common multiple (or factor) to work with as well as further opportunities to explore equivalent fractions.
 
Note: The context for this unit assumes that your students have had prior experience with fractions and their relationship to division with whole numbers. If this is not the case, you might find it helpful to first use the units Field Trips and Fund-Raisers.
 
To learn more visit http://www.contextsforlearning.com
 
 

Details of the book - Best Buys, Ratios, and Rates: Addition and Subtraction of Fractions (Contexts for Learning Mathematics, Grades 4-6: Investigating Fractions, Decimals, and Percents, Band 4)


EAN (ISBN-13): 9780325010267
ISBN (ISBN-10): 0325010269
Paperback
Publishing year: 2008
Publisher: FIRSTHAND BOOKS
80 Pages
Language: eng/Englisch

Book in our database since 2009-07-30T17:58:52-04:00 (New York)
Detail page last modified on 2023-11-12T10:59:51-05:00 (New York)
ISBN/EAN: 9780325010267

ISBN - alternate spelling:
0-325-01026-9, 978-0-325-01026-7
Alternate spelling and related search-keywords:
Book author: twomey
Book title: must buys, ratio

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