Enhancing Students’ Mastery of Integer Operations Through a Collaborative Learning Strategy Using KenKen Puzzles Kyla M. Hinampas Student Researcher, Teacher Education Department, Davao de Oro State College, Compostela Gemar B. Magbutong Instructor I, Teacher Education Department, Davao de Oro State College, Compostela Abstract This study investigates the effectiveness of the Collaborative Learning Strategy (CLS) using continue reading : Enhancing Students’ Mastery of Integer Operations Through a Collaborative Learning Strategy Using KenKen Puzzles