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    2.G.3


    Overarching Skill:

    Reason with shapes and their attributes.

    Standard:

    Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape.

    Key Vocabulary:

    partition, circle, rectangle, halves, thirds, half of, third of, describe, whole, recognize, equal shares, identical wholes

    Supporting Vocabulary:


    Learning Targets:

    1. Partition circles into two, three, or four equal shares.

    2. Partition rectangles into two, three, or four equal shares.

    3. Describe the shares of circles and rectangles as fractional name, i.e., halves, thirds…

    4. Describe the whole of two halves, three thirds, and four fourths.

    5. Recognize that equal shares of identical wholes need not have the same shape.

    Demonstrators:


    Previously Mastered Learning Targets:

    1. Partition circles into two and four equal shares.

    2. Partition rectangles into two and four equal shares.

    3. Describe the shares of circles and rectangles using words: halves, fourths, and quarters.

    4. Describe the shares of circles and rectangles using phrases: half of, fourth of, and quarter of.

    5. Describe the whole as two of, or four of the share.

    6. Show understanding of partitioned circles and rectangles being decomposed into more equal shares creates smaller shares.

    Extension Learning Targets:

    1. Partition shapes into parts with equal areas.

    2. Express the area of each part as a unit fraction of the whole.

    Link to CRS:

    Properties of Plane Figures and Numbers: Concepts and Properties

    Foundational Skill

    Recognize equivalent fractions and fractions in lowest terms.

    Notes:



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