Development and Acceptability if Worktext in Differential Calculus Among Students of University of Rizal System

There has been an increased emphasis on students to recognize significance of Calculus in many areas of life. Hence, the demand of instructional materials like worktext despite rapid development of new technologies continues. This research is focused on developing a worktext that enhance students’ solving ability, improving academic performance and creative thinking towards teaching material for this course. It is based on the outline prescribed by the Commission on Higher Education Memorandum Order (CMO) No. 12, series of 2008 (CHED, 2008). Developmental method of research was employed, and it utilized the ADDIE model (Analysis, Design, Develop, Implement, and Evaluate) to develop the instrument of instruction. Mathematics experts determined its acceptability using a validated evaluation instrument. Results showed that the worktext is acceptable in terms of content, relevance’ style and presentation, usefulness, and clarity using weighted mean. Furthermore, the performance of students using the worktext reflected a significant difference compared to those who did not use. Thus, it validates the successful development and integration of the worktext into the course. Mathematics teachers and professors are hereby recommended to develop and design their supplementary materials for their students to develop and enhance their mathematics performance.