First, identify the fractions represented by the models.
The model on the left is divided into four equal parts, and two parts are shaded.
So, the model represents $\frac{2}{4}$.

The model on the right is divided into four equal parts, and three parts are shaded.
So, the model represents $\frac{3}{4}$.

$\frac{2}{4}$	$<$	$\frac{3}{4}$

$\frac{2}{4}<\frac{3}{4}$ is the correct comparison because:

• $\frac{2}{4}$ and $\frac{3}{4}$ have the same denominator, and 2 < 3.

• 2 parts of an equally-divided whole is less than 3 parts of an equally-divided whole of the same size.

• the model of $\frac{2}{4}$ has less area shaded than the model of $\frac{3}{4}$.