Memo For Public and Private Elementary and Secondary Schools : CORRIGENDUM TO THE 2015 MTAP CONVENTION AND MTAP- DEPED-NCR SEMINAR -WORKSHOP IN MATHEMATICS FOR ELEMENTARY AND SECONDARY TEACHERS Posted on September 16, 2015 by MSM13 Leave a comment 2247. CORRIGENDUM TO THE 2015 MTAP CONVENTION AND MTAP- DEPED-NCR SEMINAR -WORKSHOP IN MATHEMATICS FOR ELEMENTARY AND SECONDARY TEACHERS . Memorandum