Children expand the mental number line first by ________.

A. extending it to the right with larger whole numbers, then filling it in with fractions, and then extending it to the left with negative numbers
B. extending it to the right with larger whole numbers, then extending it to the left with negative numbers, and then filling it in with fractions
C. filling it in with fractions, then extending it to the right with larger whole numbers, and then extending it to the left with negative numbers
D. filling it in with fractions, then extending it to the left with negative numbers, and then extending it to the right with larger whole numbers


Answer: A

Psychology

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