<![CDATA[This study aims to determine the design of the development of teaching materials based on Problem-Based Learning in learning Theme 4 My Hero, grade IV of SD Swasta PAB 33 Sidodadi and to determine the feasibility of teaching material products based on the Problem-Based Learning model in learning Theme 4 My Hero, grade IV of SD Swasta PAB 33 Sidodadi. In this study, the researcher used a research and development design which is better known as Research and Development (R&D). The subjects of the trial in the development of thematic teaching materials based on the Problem Based Learning model on the theme of my hero are validators, material experts and textbook experts. The object of this study is a thematic textbook based on the Problem Based Learning model. The product developed is a teaching material based on Problem Based Learning on the theme "My Hero". The total score obtained from the validation of teaching material experts is 98.8 with the category "Very Eligible", from the final validation of material experts, namely 98 with the category "Very Eligible" and from learning experts 92.2 with the category "Very Eligible". The average score from the expert assessment is 96.33. From the score, it can be said that the Problem Based Learning-based teaching material on the theme "My Hero" that was developed is "Very Suitable" for use in the learning process in grade IV of elementary school]]>
