Order by length
Order-by-length 256
Exercise Name: Order by length
Math Missions: Early math Math Mission
Types of Problems: 2

The Order by length exercise appears under the Early math Math Mission. This exercise uses lines and lengths to compare relative sizes.

Types of Problems

There are two types of problems in this exercise:

  1. Order the line lengths: This problem provides three lines of different lengths. The user is expected to use the manipulative to put the lines in decreasing order, largest line segment on top. This problem can also ask the user to put the shortest line on top.

    Order the line lengths

  2. Use blocks to compare: This problem has two figures that are supposed to be compared by their relative sizes compared to some given blocks. The user is expected to answer a couple questions from a list.

    Use blocks to compare


This exercise requires geometric knowledge more than algebraic knowledge to be done correctly.

  1. The order for the line segments is always largest on top. This can help with speed.
  2. Natural intuition can be used to assist on the Use blacks to compare problem, but should not be relied upon. Sometimes it is possible to manipulate the symbols to make things different sizes.

Real-life Applications

  1. Measurements are used for many things, such as cooking, and for placing carpet.

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