Texas Essential Knowledge and Skills (TEKS):
3.3.B

determine the corresponding fraction greater than zero and less than or equal to one with denominators of 2, 3, 4, 6, and 8 given a specified point on a number line;

Florida - Benchmarks for Excellent Student Thinking:
MA.3.FR.2.1

Plot, order and compare fractional numbers with the same numerator or the same denominator

3rd Grade Math - Fractions on Number Lines Lesson

A fraction is part of a whole.

$\frac{1}{3}$

The top number is the numerator. It represents the number of parts that are selected.

The bottom number is the denominator. It represents the number of parts the whole is divided into.

A number line can be used to represent a fraction.
A number line has equally-spaced tick marks between whole numbers.

The number line below represents $\frac{1}{3}$. Each whole is divided into three equal parts, and one part is selected.