Exploratory and Explanatory Case-Based Learning and the Scientific Investigation Skills of Grade 9 Students

The study aimed to determine the effect of the implementation of investigative case-based learning in the scientific investigation skills of the grade 9 students of Bignay National High School for the school year 2023-2024.It attempted to identify the pre-and post-performance scores of the students and its significant difference as to their scientific investigation skills in science in terms of initiating and planning, performing and recording, analyzing and interpreting, and communication skills.Furthermore, it aims to determine the significant differences between the post-assessment performances of the two groups of students exposed to exploratory and explanatory case-based learning.The study utilized descriptive-experimental research.Two groups of Grade 9 students served as the respondents of the study which were selected through purposive sampling based on the total enrollment of grade 9 students enrolled for the school year 2023-2024 handled by the researcher.The result indicated that there is a significant difference between the pre-and post-performance scores of the two groups of students exposed to exploratory and explanatory case-based learning.Since there is a significant difference between the pre-and post-performance scores of the two groups of students, the null hypothesis is not supported.Likewise, there is a significant difference between the post-and post-performance scores except for their initiating and planning skills, the null hypothesis is partially not supported.In conclusion, teachers may consider the use of Lesson Exemplar with Exploratory and Explanatory Casebased Learning strategies as the mode of assessing and improving student's scientific investigation skills.