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Size of an interval on a number line Example: fractions on a number line Each of these shapes have been split into two equal parts. Each part is a half. Half is shaded orange and half is unshaded.

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Fractions are the basis for most higher-level mathematics. Students need to master the numerical values in earlier grades to tackle topics like algebra later. There’s only one hitch: Fractions can ...

“Who would draw a picture to divide 2/3 by 3/4?” asked Marina Ratner, a professor emerita of mathematics at the University of California at Berkeley, in a recent Wall Street Journal opinion piece.

Size of an interval on a number line Example: fractions on a number line Each of these shapes have been split into two equal parts. Each part is a half. Half is shaded orange and half is unshaded.