Visual aids can help students understand how to find the area of triangles, but sometimes they can cause problems. Here are a few challenges that come up:

1. Complex Diagrams: Many students have a hard time understanding complicated diagrams. If a visual is too detailed, it can make things confusing instead of clear. The formula for the area of a triangle is $A = \frac{1}{2}bh$, which sounds simple, but if the diagram doesn’t show clear measurements, students may get lost.

2. Heron's Formula Confusion: Heron's formula, $A = \sqrt{s(s-a)(s-b)(s-c)}$ (where $s$ is the semi-perimeter), can be tough to understand with pictures. Without clear labels and measurements, students may struggle to connect the formula to the sides of the triangle.

3. Too Much Dependence on Visuals: Some students might rely too much on pictures and not practice solving problems on their own. This can leave them unprepared for theoretical questions about triangle areas.

To fix these problems, it’s important to use simple diagrams with clear labels. These should highlight the main features of triangles. Interactive tools and step-by-step learning can help students understand both the base-height method and Heron's formula. This way, they can learn without getting confused!