6th graders should understand the definition of a triangular prism and how to use its net to determine the surface area. Teachers can use a "Find surface area given a net of a triangular prism Worksheet" to help their students gain proficiency in this skill. The net of a triangular prism is the unfolded two-dimensional representation of the prism. By calculating the area of each of its faces and adding them together, students can determine the surface area of a triangular prism.