This study explored the significant relationship between engagement-based teaching approach and fundamental skills of students. In this study, the researcher selected the 155 senior high school students in Asuncion District in Davao del Norte as the respondents of the study in quantitatitive phase, while 10 students were selected for IDI and FGD on qualitative phase. A mixed method research design using explanatory sequential approach was employed. The data collected were subjected to the following statistical tools: Mean and Pearson-r Correlation Analysis. Findings revealed that engagement-based teaching approach and fundamental skills of students were rated as extensive. Evidently, correlation analysis proved that there is a significant relationship between engagement-based teaching approach and fundamental skills of students. Thematic analysis confirmed the extensive rating on engagement- based teaching approach was due to technology integration and diverse learners, while the extensive rating on fundamental skills of students was due to previous educational encounters, limited participation in classroom activities, and distractions. Thematic analysis showed that clearly defined objectives, flexibility and choice, and emotional connections, confirmed the significant relationship between engagement-based teaching approach and fundamental skills of students.