2012 Volume 52 Issue 3-4 Pages 69-79
In secondary education, "Using the integration, students can calculate the area of the shapes enclosed by curves", it is an important goal. However, it is not enough for the students to understand the concept of integration. In this paper, we aimed to improve educational contents for the students to understand integration. We improve educational contents and teaching practices. As a result, we could show that these educational contents were effective.