Section outline

  • General

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  • 制表和图表

    Streaming Service
    ::流流服务处

    lesson content
    Watching a Video

    μ Tube ( pronounced "mew-tube") is a new video streaming service that provides students with helpful math videos. Membership for the service costs $6 per month.
    ::微图比(publicationd "mew-tube")是一个新的视频流服务,为学生提供有益的数学视频。

    A nswer the questions below about this relationship.
    ::回答以下关于这种关系的问题。

     

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    If the μTube math video service is billed monthly, which of the values below would be the independent variable if you were calculating cost?
    ::如果您是计算成本的话, 那么下方的哪个值将会是独立的变量?

    a

    The number of months
    ::月数

    b

    The number of videos
    ::视频数量

    c

    The total cost of membership
    ::会员费用总额

    d

    The quality of the videos
    ::视频质量

     

     

    Animal Speeds
    ::动物速度

    The formula  distance = rate  × time  is used to determine how  far  an object moving at a specific rate  can travel in a certain amount of time   You can use a table to display the  relationship between time and distance traveled .
    ::公式距离 = 速率 x 时间 用于确定按特定速率移动的物体在一定时间内能够行驶到多远 。 您可以使用表格显示时间和行距之间的关系 。

    A table provides points of reference at specific values. An equation tells you the relationship for any values. In the case when you are only interested in a select range of values, a table is appropriate.
    ::表格提供特定值的引用点。方程式告诉您任何值的关系。如果您只对选定的数值范围感兴趣,表格是合适的。

    In the interactive below, the tables display the average running speeds of 5 different animals. Choose one animal and create a table that relates the independent variable (speed) to the dependent variable (distance).
    ::在下文互动部分,表格显示5种不同动物的平均运行速度。选择一种动物并创建一个将独立变量(速度)与依赖变量(距离)相联系的表格。

     

     

     

     

     

    Mission to the Moon
    ::对月球的飞行任务

    lesson content
    Astronaut in Space

    The previous lesson ( ) discussed the difference in  weight on Mars and on the other planets in our solar system compared to Earth. On July 24, 1969, the Apollo 11 mission sent Neil Armstrong, Buzz Aldrin, and Michael Collins to the moon.  From old video footage, you can see that the gravity on the moon is nothing like the gravity on Earth. The moon’s gravity is approximately one-sixth of the Earth’s gravity meaning that on the moon, you would weigh approximately one-sixth what you would weigh on the Earth.
    ::先前的教训()讨论了火星和太阳系中其他行星与地球相比的重量差异。 1969年7月24日,阿波罗11号飞行任务派遣尼尔·阿姆斯特朗、巴斯·阿尔德林和迈克尔·柯林斯登入月球。 从旧的录像中,你可以看到月亮的重力与地球的重力完全不同。 月亮的重力大约是地球重力的六分之一左右,这意味着在月球上,你将承担地球重力的六分之一左右。

    In the interactive below use the relationship of Earth weight to Moon weight to create a table and a graph between the .
    ::在下文互动中,利用地球重量与月球重量之间的关系,在.之间创建一张表格和一张图表。

     

     

     

     

     Summary
    ::摘要

    • Real-world relationships can be expressed using equations, tables, and graphs.
      ::现实世界关系可以用方程式、表格和图表来表示。
    • Tables show points for  specific values while equations and graphs can show all values.
      ::表格显示特定值的点,而方程式和图表则显示所有值。