### BUILDING STUDENTSâ€™ UNDERSTANDING OF QUADRATIC EQUATION CONCEPT USING NAÃVE GEOMETRY

#### Abstract

The purpose of this research is to know how NaÃ¯ve Geometry method can support studentsâ€™Â understanding about the concept of solving quadratic equations. In this article we will discussÂ one activities of the four activities we developed. This activity focused on how students linkingÂ the NaÃ¯ve Geometry method with the solving of the quadratic equation especially on howÂ student bring geometric solution into algebraic form. This research was conducted in SMPÂ Negeri 1 Palembang. Design research was chosen as method used in this research that haveÂ three main phases. The results of this research showed that manipulating and reshaping theÂ rectangle into square could stimulate students to acquire the idea of solving quadratic equationsÂ using completing perfect square method. In the end of the meeting, students are also guided toÂ reinvent the general formula to solve quadratic equations.

Keywords: Quadratic Equations, Design Research, NaÃ¯ve Geometry, PMRI

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DOI: https://doi.org/10.22342/jme.5.2.1502.191-202

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