The Number Line
With an origin, a positive direction and a unit length, every rational number has exactly one point on the line
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With an origin, a positive direction and a unit length, every rational number has exactly one point on the line
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A number line is a "track" for numbers: a straight line with an origin, a positive direction and a unit length. 0 sits at the origin, positives go right, negatives go left, and every rational number matches exactly one point. Drag the dot and watch the reading change.
Drag the dot or tap anywhere on the number line to read off the rational number at that point. Learn the three elements of a number line — origin, positive direction and unit length — and how negative numbers, zero and positive numbers are positioned.