The purpose of this study was to create a learning mode-based supplemental material for Biology 10. This material was used to assess the critical thinking skills of student responses in the areas of argument, explanation, problem-solving, and tracking cause and effect. The development was focused on the kids' preferred learning modes, which include auditory, visual, reading/writing, and kinesthetic. Prior to the implementation of the said material, the expert and student respondents assessed its level of components in terms of format, presentation, organization, acceptability, and adaptability. Afterward, a post-test was carried out. The study discovered that the majority of respondents were extremely acceptable as judged by the two categories of respondents. The supplemental material assisted the students in improving their critical thinking skills, as evidenced by their pre and post-test scores. There were considerable disparities in the respondents' pre and post-test scores.