The concept of intersection is not introduced until the second grade and formalized in the third grade. ... product will be used here mainly in connection with multiplication and with graphing when we use ordered pairs of numbers to locate points in the plane. The number line will be introduced here along with the presentation of whole numbers in Chapter 7. ... ideas, teachers have reported that they find it helpful to use the words aquot;removeaquot; or aquot;left overaquot; prior to the particular lessons.

Title | : | Studies in Mathematics: Inservice course for primary teachers |

Author | : | Richard Davis Anderson |

Publisher | : | - 1966 |

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