TY - JOUR A1 - Pham Sy NAM, . PB - Departement of Mathematics EducationFaculty of Mathematics and Natural Science Yogyakarta State University JF - International Seminar on Innovation in Mathematics and Mathematics Education Y1 - 2014/// UR - http://fmipa.uny.ac.id SN - 978-602-1037-00-3 ID - UNY24242 TI - Teaching Experiments in exploring convex and concave functions AV - public ER -