Character education is now in the spotlight in the learning process at school. In the process of learning physics, there are practicum activities in it. According to several students at MA Madani Alauddin also said that learning physics with practicum activities is interesting and increases students' interest in learning. However, in practicum activities at MA Madani Alauddin there are no practicum tools or tools that can help the implementation of practicum be more effective and combined with the application of character learning. The purpose of this study is to find out the process of developing character-based physics practicum tools on class XI temperature and heat materials at MA Madani Alauddin, to find out the level of validity, practicality level and level of effectiveness for the development of character-based physics practicum tools on class XI temperature and heat materials at MA Madani Alauddin. The type of research used in this study is the Research and Development (R&D) method. The research design used is the 4D (Define, Design, Development, and Disseminate) development model. The data analysis technique used in this study is descriptive statistical analysis. The results show that the level of validity of the product developed after passing the final validation stage for the assessment guide is in the very valid category with a validity value of 0.80% and for the practicum module it is in the valid category with a validity value of 0.76%. The results of the practicality analysis show that teachers and students respond positively to the developed product, so it can be concluded that the practicum tool developed meets the practical criteria with 31% of students choosing the practical category. The effectiveness results were obtained using the N-Gain test and the value of 0.6% was obtained with a moderate or effective category.
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