Fraction number lines

Zero to one, cut nine ways. Every mark is labeled with its lowest-terms name — so 2/4 prints as 1/2, and equivalent fractions reveal themselves by lining up down the page.

Halves
0 1/2 1
Thirds
0 1/3 2/3 1
Quarters
0 1/4 1/2 3/4 1
Fifths
0 1/5 2/5 3/5 4/5 1
Sixths
0 1/6 1/3 1/2 2/3 5/6 1
Eighths
0 1/8 1/4 3/8 1/2 5/8 3/4 7/8 1
Tenths
0 1/10 1/5 3/10 2/5 1/2 3/5 7/10 4/5 9/10 1
Twelfths
0 1/12 1/6 1/4 1/3 5/12 1/2 7/12 2/3 3/4 5/6 11/12 1
Sixteenths
0 1/16 1/8 3/16 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16 7/8 15/16 1

The same idea, interactive and down to 128ths: the ruler.

Common questions

Why are some labels already reduced?
Because 2/4 IS 1/2, and the chart says so: every mark carries its lowest-terms name. Stack the quarters line over the halves line and the labels agree wherever the marks do — that lining-up is what equivalent fractions mean.
How do I use these in a classroom?
Print the page — the site chrome drops away, one line per denominator survives. Have students find the same value on different lines (1/2 appears on six of them), or read off which line first gives a name to a point between marks.
Where this comes from. Exact rational arithmetic on the values shown — fractions are pairs of integers until display, and inch–metric conversion uses 25.4 mm to the inch, exact by definition since 1959. See the full methodology.