Creating an original instructional material in teaching science by relating learning content to local information and materials from the learner’s community is one of the main features of the K to 12 Curriculum that will enhance students’ achievement. The study aimed to develop and determine the acceptability of a localized module on ecosystem (Science 7) in Schools near the Mapanuepe Lake, Zambales. The study utilized mixed method- concurrent transformative design. The respondents of the study were four (4) selected evaluators and specialists in the field of Science from the Schools Division of Zambales. The researcher reviewed the grade 7 science curriculum guide then conducted a thorough observation on community near the Mapanuepe Lake, Zambales. Afterwards, he developed a localized module that was given to the respondents identified by the researcher together with the evaluation form. The results of the evaluation were used by the researcher in improving some aspects of the module to come up with a Localized Module on Interaction (Science 7). Results revealed that lessons in Grade 7 Science that concerned with the environment are components of an ecosystem, ecological relationships, and transfer of energy through trophic levels. The module was acceptable. The overall mean 4.52 indicates that the module is Excellent. This means that the aspects of module are very adequately covered and the quality is superior. Five major themes emerged to describe the comments and suggestions of the evaluators and specialists in the improvement of the module. These are the following: Localized activities, Activities are organized, Objectives are met, Translate localized terms, Complete and Simplified.