1. RICO G. GAGTO - North Luzon Philippine State College.
2. ISIDRO L. DURAN - â€‹Don Mariano Marcos Memorial State University College of Graduate Studies.
The development of modules in Pre- Calculus and Post Calculus subjects is the focusing area of this study. It is searching for the consideration of validity level of the developed modules with regard to format, content, demonstration, organization, and accuracy, readability leve, and the latest information. The descriptive-developmental method of research was utilized in conducting the study. After drafting the module, validation was made by the expert validators and upon integrating the comments and suggestions a second validation was made by the same validators. After incorporating the comments and suggestions in the second validation by the validators and the level of readability, a final copy of the module was done. The output is a developed modules in Pre-Calculus and Basic Calculus subjects. The validity for the developed modules count on format, demonstration, content, organization, accuracy and updated information. The comments and suggestions of the evaluators mean that the modules have still rooms for improvement.
Basic Calculus, module, Pre-Calculus, validity.