Draw a number line to show that 2/3 and 4/6 are equivalent

1/8 1/6 1/5 1/4 1/3 1/2 2/3 3/4

You can figure this out looking at the decimals.

Use the decimals which you already have. That makes it easy:

0.125 < 0.166... < 0.200 < 0.250 < 0.333... < 0.500 < 0.666... < 0.750