The problem asks to write a fraction that represents the shaded area on a number line. The number line shows a section shaded between 0 and some point.

Upon inspection, the shaded portion appears to represent the first two segments out of four equal parts on the number line, which extends from 0 to 1.

Therefore, the fraction representing the shaded area is:

$\frac{2}{4} = \frac{1}{2}$

Would you like further explanation on fractions, or is everything clear?

Here are 5 related questions you could explore:

1. What does it mean to simplify a fraction?
2. How would you represent $\frac{3}{4}$ on a number line?
3. How can you express a fraction as a decimal?
4. What is the difference between a proper and an improper fraction?
5. How can you convert a fraction to a percentage?

Tip: When simplifying fractions, always check for the greatest common divisor (GCD) of the numerator and denominator!