By integrating computational thinking (CT) based mathematical reasoning with early childhood education through programming a dinosaur game in Scratch, this study aims to enhance the pedagogical skills of pre-service teachers by using learning objects (LOs). Also, explores frameworks for LOs construction to align with pedagogical goals, emphasizing the importance of students' mathematical outcomes, understanding of CT concepts, and the process used by teacher to help pupils solve the problem. This research utilizes an assessment grid tool for evaluating digital learning resources, with findings indicating the LOs high-quality as assessed by 57 pre-service teachers. Our study indicate how it is possible to create and use LOs for the pedagogical development of teachers, focusing on teaching methodologies and the application of mathematical knowledge in CT activities.