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Measure lengths 2
Measuring-lengths-2 256
Description
Exercise Name: Measure lengths 2
Math Missions: Early math Math Mission
Types of Problems: 3

The Measure lengths 2 exercise appears under the Early math Math Mission. This exercise uses a marked ruler to determine one-dimensional measurements of objects.

Types of Problems

There are three types of problems in this exercise:

  1. Select correct use and answer: This problem has three demonstrations of using a ruler to measure an object. The user selects the correct use of the ruler which also has the correct final measurement.
    Ml2-1

    Select correct use and answer

  2. Select correct use and reason: This problem also has three demonstrations of using a ruler to measure an object but this time the user selects the correct use and the reason why it is the correct use.
    Ml2-2

    Select correct use and reason

  3. Use ruler to measure: This problem has a cool ruler that can be manipulated and used to measure the object. The user is also supposed to type the correct measurement in a provided answer box.
    Ml2-3

    Use ruler to measure

Strategies

This exercise is easy to get accuracy badges because the measurements never exceed single digits. The speed badges are also easy to attain on this exercise.

  1. On problem types one and two, the correct selection is the one that is correctly lined up on the left with no gaps and no overlaps. It is easy to see the correct answer without actually reading the ruler.
  2. On problem type three the ruler does not have to be moved to measure. If users can eyeball the length of the tick marks on the ruler they can finish measuring without moving the ruler and give the answer.

Real-life Applications

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

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