MATHEMATICS DIVISION INSTITUTE OF MATHEMATICAL SCIENCES AND PHYSICS College of Arts and Sciences University of the Philippines Los Baños In the Realm of Mathematics Teaching: Lesson Study for Mathematics Teaching Development in the Philippines 1 By Joseph Ma. Steven S. Cabalo* Institute of Mathematical Sciences and Physics, University of the Philippines Los Baños, Laguna *jscabalo@up.edu.ph Presented to Prof. Abriel S. Bulasag Professor in Charge, MST199-G3 University of the Philippines Rural High School, University of the Philippines Los Baños, Laguna Prof. Liza C. Carascal Principal University of the Philippines Rural High School, University of the Philippines Los Baños, Laguna 1 A seminar paper submitted to Prof. Liza Carascal and Prof. Abriel Bulasag in partial fulfilment in MST 199 G-3R, 2nd Semester, 2016-2017