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Math · grade 3 · 3.NF.A.2

Unit fractions on a number line

A fraction is a number. It lives at a place on the line.

What this skill is

Fractions are numbers with locations, not shapes with parts shaded. The number line is the representation that makes improper fractions ordinary and makes equivalence obvious — when you subdivide, the point does not move.

Three ways to teach it at home

  1. Draw the line first, mark 0 and 1, then fold or measure to make equal parts. Equal parts are the whole idea.
  2. Count in unit fractions out loud: one third, two thirds, three thirds, four thirds. Keep going past one.
  3. Ask "is it more or less than a half?" before anything else. Benchmarks beat rules.

Where this sits in the ladder

Questions people actually ask

What grade is "unit fractions on a number line"?

It sits in grade 3 in most sequences, and it is aligned to 3.NF.A.2. In Ladderbug it opens once place value to 1000 is solid — grade labels are a rough guide, and readiness is what actually matters.

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