Correct Answer - Option 4 : Ability to use scale
Measurement of an object is done to quantify its shape, size, perimeter, area, etc. to get an exact idea about its attributes.
- The teacher should first introduce the non-standardized measures at the primary level as children to some extent are familiar with them and can relate to them easily.
- Non-standard measures may include the use of a hand span to measure the length of any object, comparison between two objects to decide which one is smaller or bigger, use of foot-steps to measure the distance between two things, objects, or places, and so on.
- Then the conservation of length must be taught to them i.e., by comparing the two objects or things to introduce the measurement in primary classes.
- Such as compare the height of two children, comparing the length of pencils, and comparing the hand-spans of learners by measuring the length of their desks.
- After that, the teacher should introduce the standard units of measurement by mentioning some of the problems of using non-standard measures to give meaning to the use of rulers, scales, and measuring cups.
- Such as measurement of the length of the desk by using hand-spans of learners and show them why the length is different as the size of their hand-spans varies. So, to measure accurately and irrespective of the size of hand-spans, we use a scale or ruler to measure the length of an object.
- There, the main important aspect of measurement of length is the ability the use scale i.e., to measure the length between two points one must know how to use the scale with precision otherwise the measurement will not be valid.
- Without having the proper ability to use any measuring scale, one can not do measurement correctly.
- And after learning the ability to use scales, the children should be encouraged for Iteration so that they can attain mastery in the ability to use scales properly.
Hence, it could be concluded that the ability to use scale is an important aspect of the measurement of length.
