Above and Below Sea Level

Above and Below Sea Level

Elevations Around the World

Opening

Elevations Around the World

Watch this video of the Math News discussing the highest and lowest locations on each of the continents.

  • What do the terms above sea level and below sea level mean?
  • How can a number line help you show the elevations of some of the locations you saw in the video?

VIDEO: The World’s Highest and Lowest Locations

Math Mission

Opening

Create a number line that represents elevations above sea level and below sea level.

The World’s Highest and Lowest Locations

Work Time

The World's Highest and Lowest Locations

You have been asked to write a book called The World’s Highest and Lowest Locations.

From The World’s Highest and Lowest Locations video, choose four locations above sea level and four locations below sea level to include in a diagram for the book.

  • Either use the handout or draw your own number line in your notebook.

VIDEO: The World’s Highest and Lowest Locations

HANDOUT: The World's Highest and Lowest Locations

Challenge Problem

  • If you drew a horizontal number line for your book, now draw a vertical number line. If you drew a vertical number line for your book, now draw a horizontal number line.
  • Explain how your number line represents elevations above and below sea level.
  • Explain how you use the number system to show elevations above and below sea level.

Hint: First locate sea level on the number line.

 

    Make Connections

    Performance Task

    Ways of Thinking: Make Connections

    Take notes about how a number line can represent the highest and lowest elevations in the world.

    As your classmates present, ask questions such as:

    • Where is sea level on your number line?
    • Where are elevations above sea level on your number line?
    • Where are elevations below sea level on your number line?
    • How did you know where to place each elevation on your number line?
    • Compare this number line to number lines you have worked with in the past. How are they alike? How are they different?

    Reflect On Your Work

    Work Time

    Reflection

    Write a reflection about the ideas discussed in class today. Use the sentence starter below if you find it to be helpful.

    What I am wondering about is …