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Illustrative Mathematics Tasks

4.NF Explaining Fraction Equivalence with Pictures

Direct link to this task  |  download PDF

4.NF Money in the piggy bank

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Full document found at http://commoncoretools.files.wordpress.com/2012/02/ccss_progression_nf_35_2011_08_12.pdf

FORMATIVE ASSESSMENT
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Beyond Pizzas and Pies
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Teaching Student Centered Mathematics
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Focus on Grade 3
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LESSON IDEAS
TECHNOLOGY CONNECTIONS
Equivalent fractions with an area model/fraction strip:
http://www.conceptuamath.com/fractions/equivalent-fractions.html
Equivalent fractions on the number line:
http://www.mathsisfun.com/numbers/fraction-number-line.html
Illuminations: Equivalent Fractions
http://illuminations.nctm.org/ActivityDetail.aspx?ID=80
Area Model Activity


STANDARDS
Extend understanding of fraction equivalence and ordering.4.NF.1 Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions.