Ordering of fraction mean arranging the fraction in increasing or decreasing order.

Fractions with same denominator
If the fractions has same denominator then fraction with lower numerator have lower value.
Ordering of fraction $8/12$ and $9/12$

8 12 < 9 12 0 1 // 1/12 // 2/12 // 3/12 // 4/12 // 5/12 // 6/12 // 7/12 // 8/12 // 9/12 // 10/12 // 11/12 //

Fractions with same numerator

Question Ordering of fraction $3/4$ and $3/6$
If the fractions has same numerator than fraction with lower denominator will have greater value.

3 4 > 3 6 0 1 1/4 2/4 3/4 3/4 // fraction 3/6 1/6 // 2/6 // 3/6 // 4/6 // 5/6 // 3/6