• Guide to Speech Sound Development

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    w

    p

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    k

    t

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    AGE

    3

    3 1/2

    4

    5

    5 1/2

    7

    8

    9

    Pam Heller/Speech-Language Pathologist/ Blue Valley Schools, 2007

    Norms taken from the Processes and Procedures Handbook from the Kansas State Department of Education.