章节大纲

  • How much chocolate does everyone eat?
    ::每个人都吃多少巧克力?

    lesson content
    Chocolate Bar

    Four friends break a chocolate bar into pieces to share evenly. In this interactive, distribute the chocolate bar evenly by dividing it evenly among the friends. Figure out what fraction of the total chocolate bar each friend gets. Later in this lesson, you will use tape diagrams to divide with fractions.
    ::四位朋友将巧克力条折成块以平均分享。 在此互动中, 平均分配巧克力条, 并在朋友之间平均分配。 找出每个朋友的巧克力条总分数。 在此课后, 您将使用磁带图将巧克力条和分数分开 。

     

     

    INTERACTIVE
    Mixed Numbers in Applications: Sharing a Chocolate Bar
    minimize icon
    • Sarah shares her chocolate bar with her friends.
      ::Sarah和她的朋友一起吃巧克力吧
    • Follow the prompts and drag the appropriate amount of chocolate next to each person.
      ::跟着提示 拖动适当的巧克力数量 旁边的每个人。
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    Can you fill the video game health bar?
    ::你能填充视频游戏健康酒吧吗?

    A video game character girl wearing plumber's clothing jumping to collect prizes..
    Video Game Screen

    The first level of a video game, Super Maria Sisters, has a health bar across the top of the screen. Every time Maria drinks her health potion,  she gets a health boost and a fraction of her health is returned to her health bar
    ::电视游戏的第一层,超级玛丽亚修女会,在屏幕顶部有一个健康栏杆。 每次Maria喝她的健康药剂,她都会得到健康提升,其部分健康恢复到健康栏杆上。

    Use the interactive below to visualize what fraction of her total health is restored with each boost.
    ::利用下面的交互效果 来想象一下她整体健康中 哪些部分 得到恢复 与每股提振。

     

    INTERACTIVE
    Health Boosts
    minimize icon
    • Drag the red point to find how many health boosts are needed to fill up a health bar.
      ::拖曳红色点以找到填充健康棒需要多少健康助推器。
    • Press the white button to change how much a health boost is worth.
      ::按下白色按钮,以改变健康提升值多少。
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    Can you fill more than 1 video game health bar?
    ::您能否填充超过 1 个视频游戏健康酒吧 ?

    A video game character girl wearing plumber's clothing.
    Super Maria

     

    In later levels of the video game, Super Maria Sisters, Maria earns additional health that is added to the health bar at the top of the screen. Just like before, as Maria drinks her health potion, a fraction of her health is returned.
    ::在后来的视频游戏中,超级玛丽亚修女会(Super Maria Sisters),Maria在屏幕顶端的卫生栏上增加了更多的健康,就像以前一样,当Maria喝她的卫生药剂时,她的一小部分健康得到恢复。

    In the following interactive, Maria has more health and more “hearts” to replenish. If the boosts restore different fractions of one heart, how many boosts will she need to reach full health?
    ::在接下来的互动中,玛丽亚有更多的健康和更多的“心脏”需要补充。 如果提振恢复了心脏的不同部分,她需要多少提振才能达到完全健康?

     

     

     


    How much cookie dough ice cream does everyone eat?
    ::每个人都吃多少饼干面团冰淇淋?

    lesson content
    Cookie dough ice cream

    Three friends order a large scoop of cookie dough ice cream at a scoop shop.  A large scoop weighs 1 2  a pound.  How much  ice cream will each person get if  the friends share the  ice cream  equally?
    ::3个朋友在一家小卖店订了一勺大饼干面团冰淇淋,一磅12块。如果朋友平分冰淇淋,每人能得到多少冰淇淋?

    Use the next interactive to visualize what fraction of ice cream everyone gets if they divide the ice cream evenly.
    ::使用下一场互动 来想象一下冰淇淋的分量 如果把冰淇淋平分的话 每个人都能得到多少

     

    INTERACTIVE
    Cookie Dough Ice Cream
    minimize icon
    • Click on the white buttons to pick an ice cream size.
      ::点击白色按钮来选择冰淇淋大小 。
    • Drag the slider to choose the number of friends to divide the ice cream.
      ::拖动滑块以选择要分割冰淇淋的朋友数 。
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       Summary
    ::摘要

    There are multiple different ways to divide a half a pizza with 5 friends. Two examples of math expressions that show the process are:
    ::以多种不同的方式将半份比萨饼和5个朋友分开。

    • 1 2 ÷ 5 = ? D ividing the half pizza by 5 friends to see how much pizza each friend gets.
      ::5个朋友把半份比萨饼分给了5个朋友 看看每个朋友有多少份比萨饼
    • 1 2 ÷ ? = 5  Dividing the half pizza by the amount each friend will get must be enough for five friends.
      ::5比萨饼的比萨饼数量 每位朋友的份量 一定足够5个朋友吃

    In both expressions, ?  is the number of times 5  will go into  1 2 .
    ::在两个表达式中,5乘以12是12吗?