The study focused on the development and validation of a worktext in Science, Technology and Society assessing the availability, adequacy of instructional materials, and the needed topics in the course; and the level of validity of the activities along content, format, and readability. The content of the worktext was subjected to the scrutiny of competent science teachers; the format was validated by experts in educational media and a professor in Statistics validated its readability. The study identified that there is a deficiency in the availability and adequacy of the instructional materials in Science, Technology and Society; hence, there is a need to develop a work text in the said discipline. The study also concludes that the developed work text is valid. This means that it contributes to the achievement of specific objectives of the subject, provides for the development of higher cognitive skills, is well-organized and well-designed, and it is suitable to the vocabulary level and ability of the students. The policy implications of the study are that instructional materials must be properly allocated and if to be constructed, they should be made correctly and suitably to their intended users, and instructional materials should be efficiently used with the standard quantity and quality.