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Measuring : Adult Learning : Mathematics Content Knowledge


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Adult Learning
Measuring
Question 1 of 23

1. How confident are you that you can:

a. provide suitable uniform non-standard units and activities so that adults learn to compare, measure and estimate the sizes of different objects?


Example

Measuring begins with direct comparison of two objects placed side by side to answer questions such as: ‘Which of these pencils is longer?’

Pencils

Balance objects on scales to find out, say, ‘Which of these shoes is heavier?’ Pour water from one container to another to find out ‘Which of these jugs holds more?’

Adults can make the comparisons by measuring each of two objects separately using suitable non-standard uniform units. They may create their own units, such as hand span or length of mobile phone, to match the height of, say, two garden canes; they compare the numbers to find out which cane is taller and by how much. They can balance each of two shoes against a number of wooden cubes, and fill each of two jugs using the same yogurt pot.

Handspans

Based on their experience, they might estimate the length of a third garden cane, the weight of a third shoe or the capacity of a third jug, then confirm their estimates by measuring using the relevant non-standard unit.

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