23 1 10 A Teaching Approach P. G. Scopes Primary Author mixed material 0521097282 New York Cambridge University Press 1973 Mathematics_in_Secondary_Schools.jpg.jpg Robert Morris Editor mixed material 9231019058 Paris Unesco 1981 Studies_in_Mathematics_Education.jpg.jpg Andi Hakim Nasoetion Primary Author mixed material 9794076260 Jakarta Balai Pustaka 1996 Andi Hakim Nasoetion Primary Author mixed material 9794077593 Jakarta Balai Pustaka 1996 Seymour Lipschutz Primary Author mixed material Jakarta erlangga 1985 Michael D. Greenberg Primary Author mixed material 013011118x New Jersey Prentice Hall 2001 Differential_Equations_%26_Linear_Algebra.jpeg.jpeg K. Martono Primary Author mixed material 9794041653 Bandung Angkasa 1986 A. Rukawi Fachruddin Primary Author mixed material Bandung Angkasa 1979 E. T. Ruseffendi Primary Author mixed material Bandung Tarsito 1985 Barizi Primary Author mixed material 979459654x Jakarta Departemen Pendidikan dan Kebudayaan 1996