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Thread: How do I teach my ds his timetables?

  1. #21
    Anyone for tennis? Michelle's Avatar
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    Sure, everything we wear smells like barbecue, but you like your shirtwaists triangular, don't you?

  2. #22
    Full Sponsor GiftOfFlavor's Avatar
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    Quote Originally Posted by Sprockey View Post
    I still don't know 7X8 or 8X9
    or the 12's by heart
    7 x 8 is 56

    I remember 5678 56= 7 x 8

    8 x 9 is 72
    for 9's you always - 1 then add to make 9
    so 8-1 is 7
    7+2=9
    72

  3. #23
    Shrieking Violet Sprockey's Avatar
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    neat trick!

  4. #24
    still a bibliophile THATJamie's Avatar
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    I am the boss at 12s because I worked in Michigan counting bottles and cans at the bottle returns.

    12 packs, man. Good times.

  5. #25
    Turtle killer STLouisMom9800's Avatar
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    Quote Originally Posted by Sprockey View Post
    I still don't know 7X8 or 8X9
    or the 12's by heart
    Do you know 7x4? Double it.

    Same with 8x9. Do 4x9 and double it.

  6. #26
    Shrieking Violet Sprockey's Avatar
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    Another good trick!

  7. #27
    nolite te bastardes carborundorum stellarfeller's Avatar
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    I hated my Grade 5 teacher, but she did help me learn my times tables up to 12
    Mornings are for coffee and contemplation
    -
    Chief Hopper, Stranger Things

  8. #28
    Thankful for the tomorrows... Katrina's Avatar
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    The array (the box on grid paper) is a good visual. I work with my students to count by the number like GOF.

  9. #29
    Full Sponsor maurinsky's Avatar
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    There's a finger trick wit 9s that my dad taught me. I had to number my fingers, the thumb on the left was 1, the pinky was 5, and the thumb on the right was 6 and the pinky was 10. So if you're doing 9X1, you put down finger one, and the answer is 9 because that's how many fingers are left. 9x2, you put down your second finger and you have the 1 and then 8 other other fingers =18. 9x3, put down the 3rd finger, you have 2 and 7, and so on. Complicated to describe in words but it was very easy to learn and helped me at least through 9x9.

    The grid format is very good because it allows you to visualize number patterns, which I think is helpful for an overall understanding of numbers. I didn't see that until my kids were learning, though.

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