DM NO. 506 S. 2026 – ADDENDUM TO DIVISION MEMORANDUM NO. 623, S. 2025 (THREE-DAY STAY-IN DIVISION TRAINING ON STRENGTHENING SCIENCE CONTENT MASTERY, PEDAGOGICAL SKILLS ENHANCED BY ARTIFICIAL INTELLIGENCE INTEGRATION FOR GRADES 7, 8 SCIENCE AND GRADE 9 NON- SCIENCE MAJORS TEACHERS UNDER PROJECT e-SIKLAB)