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  • 未知值

    How much further  to the top of the mountain?
    ::离山顶还有多远?

    With  the interactive below, you  can calculate the number of meters left for a climber to get to the top of the mountain. Throughout this lesson, you will solve for unknown values.
    ::在下面的交互效果下, 您可以计算一个登山者到达山顶所剩的米数。 在整个课程中, 您将解答未知值 。

     

    INTERACTIVE
    Climbing Mountains
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    A mountain climber is climbing Purple Peak. The elevation of the summit or top of the mountain is 2913.3 meters. 
    ::登山者正在攀登紫峰,峰顶或山顶的高度为2913.3米。

    • Drag the red point (the climber) up the mountain.
      ::将红色点拖到山上。
    • Find the value of   @$?@$  at different positions along the climb.
      ::寻找@ $ 的价值? @ $ 在攀爬的不同位置 。
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    Progress
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    1.

    What will the value of ? be at the top of the mountain?
    ::山顶上有什么价值?

    a

    1

    b

    0

    c

    2313.3

    d

    114.2

     

     

    How much do you have after buying a new outfit?
    ::买新衣服后你有多少?

    lesson content

    In the interactive,  you can take an avatar shopping for different outfits. Look at how much change you would get back if you were to purchase an outfit.
    ::在互动中, 您可以用阿凡达购买不同的服装。 看看如果你购买一套衣服, 你会得到多少变化。

     

    INTERACTIVE
    Going Shopping with $100
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    • You are given $100 to spend at a clothing store.
      ::您可前往服装店购买100美元。
    • Click on an item to buy it and then calculate how much money you would have left after buying it. 
      ::点击某个项目购买它,然后计算购买之后你将离开多少钱。
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    How can you find Olympic Bobsleigh race times?
    ::你怎么能找到奥运鲍伯斯利的赛事时间?

    lesson content

    In the Olympics, bobsleigh teams are ranked in order of gold (1st place), silver (2nd place), and bronze (3rd place) based on the sum of 4 different race times. Each of these bobsleigh races is called a run .
    ::在奥运中,波斯雪球队按黄金(第1位)、银(第2位)和铜(第3位)的排名,按4个不同赛次的总和排列。 这些波斯雪球队的每场赛跑都被称为跑跑。

    Each of the race times in the  interactive are from the 2018 Olympic Women's Bobsleigh race.  Use the times to find the total race time for each team.
    ::互动的每个赛事时间都是来自2018年奥运女性Bobsleigh赛事。 利用赛事时间来寻找每个赛队的总赛事时间 。

     

    INTERACTIVE
    Bobsleigh Race Times
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    • Click the buttons to calculate the total race time for each country.
      ::单击按钮计算每个国家的总赛跑时间。
    • Afterwards, type in the total time in seconds.
      ::之后,键入总时间以秒计。
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    You used the same process to find the total time for each country:
    ::您使用同样的程序来寻找每个国家的全部时间 :

    Run 1 + Run 2 + Run 3 + Run 4
    ::运行 1+ 运行 2+ 运行 3+ 运行 4

    Discussion Question
    ::讨论问题

    What are some different ways that someone could abbreviate Run 1, Run 2, Run 3, and Run 4?
    ::以什么不同的方式 有人可以缩写运行1,运行2,运行3,运行4?

    20 teams competed in the women's bobsleigh race in 2018 Olympics. TV stations broadcasting the Olympics  showed a big chart  with all of the teams on it at the end of the races. The chart showed the differences between each team's total time with the fastest race time rather than showing the total time for every team.
    ::在2018年奥运中,20个球队在女子博布雪球比赛中参加比赛。 播放奥运的电视台展示了一张巨大的图表,所有球队在比赛结束时都参加了这个图表。 该图表显示了每个球队总时间与最快比赛时间之间的差异,而不是显示每个球队的总时间。

    Discussion Question
    ::讨论问题

    How would you describe the process of finding the difference in times for all 20 teams?
    ::您如何描述所有20个团队在时间上找到差异的过程?

     

    How many squares can you build with squares?
    ::你用方块能建多少方块?

    Use the interactive below to see how many unit squares are used to build the larger square.
    ::使用下面互动的平方块来查看有多少单位方块用于建造更大的平方块。

     

    INTERACTIVE
    Building Squares with Squares
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    • Drag the square to move it around.
      ::拖动方形以移动它。
    • Drag the red point to change the size of the square.
      ::拖曳红色点以更改正方形的大小。
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    Challenge!  
    ::挑战!

    How would you describe the patterns for the numbers of squares used to make these squares?
    ::您如何描述用于制造这些方形的方形数的图案 ?

    Hint: These patterns may be challenging to describe with a math expression .  Try to find the numbers of squares being added each time.
    ::提示 : 这些图案可能很难用数学表达式描述 。 尝试找到每次添加的方形数 。

    lesson content

    lesson content

      Summary
    • To solve real world problems, write equations with an unknown value and solve for that value.
      ::为了解决现实世界的问题 写出价值未知的方程式 并解决这个价值