To show: that division of rational numbers is not commutative.

Explanation of Solution
Given information:
Choose two fractions and use an area model or number line.
Calculation:
Consider the fractions:
The following number line shows:
There are two
Therefore, the quotient is: 2.
The following number line shows:
There is one half
Therefore, the quotient is:
Thus it is seen that :
That is, division of rational numbers is not commutative.
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