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  • 使用最小常数

    Sports Calendar
    ::体育日程

    In this PLIX , you can  make a schedule   using of two numbers on a calendar with basketballs and tennis balls.
    ::在此 PLIX 中, 您可以在日历上使用两个数字, 包括篮球和网球。

     

     

     

    How much money can Ezra spend on movies?
    ::以斯拉在电影上能花多少钱?

    lesson content
    Movie Theatre

    Ezra loves to go to the movie theater  so much that he  saves up all of his weekly allowance to watch movies. He makes $8 a week and the movie theater charges $12 per movie.
    ::Ezra喜欢去电影院看电影,因此他节省了每周看电影的津贴。 他每周挣8美元,电影院每部电影收费12美元。

    Use the interactive to find out how many times  Ezra spent every penny of his money on movies by the time he makes $100.
    ::利用互动 来找出Ezra在挣100美元时 把钱每一分钱花在电影上 花了多少次

     

    INTERACTIVE
    Spending Allowance on Movies
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    • Enter into the boxes to fill out the double number line.
      ::输入框以填充双数行 。
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    CK-12 PLIX Interactive: Hot Dogs and Buns
    ::CK-12 PLIX 互动:热狗和包

    In this PLIX , you can visualize least common multiple by matching up hot dogs with buns.
    ::在这个PLIX中, 您可以通过将热狗和面包配对, 来想象最小常见的倍数 。

     

     

     

    What do the polygons in the clock have in common?
    ::时钟中的多边形有什么共同点?

    lesson content
    Clock

    Try making different stars and shapes using the interactive below.
    ::尝试使用下面的交互效果来制造不同的恒星和形状 。

    A point starts at 12 at the top of the clock and then bounces around the clock until it gets back to the starting point.  The distance the point bounces each time is based on the number of minutes that you choose on the slider.
    ::一个点从时钟顶部的 12 点开始,然后按时反弹,直到它回到起始点。点每次反弹的距离取决于滑块上您选择的分钟数 。

    Notice patterns in the number of minutes when you make a star or a polygon.
    ::生成恒星或多边形时注意分钟数模式。

     

    INTERACTIVE
    Shapes in a Clock
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    • Move the slider to change the number of minutes to see how many shapes are made in the clock
      ::移动滑动滑动器以更改分钟数以查看时钟的形状数
    • The point will move around following the pattern.
      ::点将沿着图案移动 。
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    Can you solve the LCM puzzle?
    ::你能解开 LCM 谜题吗?

    lesson content
    Solving Puzzles

    See if you can guess the mystery numbers in the puzzle below. The LCMs of each of the mystery numbers are listed inside of the grid. Each mystery number is a whole number between 1 and 12.
    ::看看您能否猜出下面谜题中的谜题数字。 每一个谜题数字的 LCM 都在网格中列出。 每个谜题数字在 1 到 12 之间, 每个谜题数字都是整个数字 。

     

    INTERACTIVE
    Least Common Multiple Mystery
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    • Click the buttons to pick a level to begin the puzzle.
      ::单击按钮来选择一个关卡以开始谜题 。
    • Use the LCM values in the grid and enter the mystery value in the white boxes.
      ::使用网格中的 LCM 值并在白箱中输入神秘值 。
    • Each mystery value is a number 1 through 12.
      ::每个神秘值是1到12号
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    Discussion Questions
    ::讨论问题 讨论问题

    1. Were you able to beat the game without making a single mistake? What strategies and shortcuts did you use?
      ::你没有犯一个错误就能战胜游戏吗?你使用了什么策略和捷径?
    2. Find two pairs of different numbers that each share the same LCM .
      ::找到两对不同数字的对, 每一对数字都具有相同的 LCM 。
    3. How is it that different pairs of numbers can share the same LCM?
      ::不同的数字如何可以分享相同的 LCM ?
    4. Find some examples of numbers that are each greater than 10 that have LCMs less than or equal to 100.
      ::找到一些数字的例子,其中每个数字均大于10,但含铅量小于或等于100。
      Summary
    • The least common multiple of two numbers is the smallest number that is a multiple of both numbers. For example, the least common multiple of 4 and 5 is 20.
      ::两个数字中最小常见的乘数是两个数字中最小的乘数。例如,4和5这两个数字中最小的乘数是20。