Trapezoidal Puzzles: The twists and turns of the 5th grade students process in calculating the area of the trapezoid
D. A. K. Dewi and S. Prabawanto

Hiroshima University, Japan
Universitas Pendidikan Indonesia, Indonesia

Abstract

The area of a trapezoid is half the product of the altitude and the sum of the bases. On the other hand we should not forget that the trapezoidal regions can be divided into sections, such as being rectangle and triangle. This is what one teacher will use to conduct her lesson. She will lead her students to the meaning of the process. The various expected responses that have emerged have been predicted. However, the surprise that comes from the students we cannot avoid. This paper will describe some snippets that occur in the class as a reflective material to become a learning expert.

Keywords: Puzzles, twists

Topic: 1. Mathematics Education