The fraction

1/4
is shaded in the diagram below. Divide

1/4 into 3 equal parts. What is the size of each part?

A number line from zero to one, marked every one-fourth. From zero to one-fourth is shaded and split evenly into three equal increments.

To divide 1/4 into 3 equal parts, we need to find 1/3 of 1/4.

Multiplying numerators, we get (1 * 1) = 1.
Multiplying denominators, we get (4 * 3) = 12.

So each part is 1/12.