For Public Elementary & Secondary Schools : DIVISION MATHEMATICS DEMONSTRATION TEACHING ON K TO 12 BASIC EDUCATION CURRICULUM FOR GRADES 4 and 10 TEACHERS Posted on July 9, 2015 by MSM13 Leave a comment 1998. DIVISION MATHEMATHICS DEMONSTRATION TEACHING ON K TO 12 BASIC EDUCATION CURRICULUM FOR GRADES 4 and 10 TEACHERS Memorandum