This study aims at developing a valid discovery-learning text book for the Islamic Education (PAI) and Character subject delivered at the fifth grade of Primary School based on the results of the accuracy analysis of the existing student books. This is a Research and Development (R and D) applying the 4-D model proposed by Semmel and Thiagarajan. that is. defining. https://safeersappliancers.shop/product-category/liebherr-ikbp2760-biofresh-performance-140cm-built-in-integrated-larder-fridge/