Pengajaran Beberapa Topik Matematika Sekolah Menengah

Abstract

 Mathematics textbooks published in Indonesia do not provide a complete explanation on how to teach the topics contained in the book. Having experienced so many years in teaching teachers in the pre-service and in-service training, the writer observed the existance of many teachers to teach mathematics without paying attention on the concepts and principles behind it especially for quadratic equation, tangent of a quadratic curve, and system of linear equation. The writer wants to share to the readers of how to teach those mathematics carefully in the secondary school level.