Learning materials are instruments or equipment used to carry out learning activities. Learning tools serve as guidance during teaching and learning, whether in the classroom, laboratory, or outside the class. This research aims to determine the validity, practicality, and effectiveness of the developed learning tools. This development research refers to the Thiagarajan model (4D), which includes the stages of defining, designing, developing, and disseminating. The developed teaching materials have met the criteria for validity, practicality, and effectiveness. The validity scores obtained for each tool are 3.6 for RTM, 3.5 for LKM, and 3.6 for THB. Practicality scores were obtained from observations of the implementation of learning, resulting in a score of 3.8 with a percentage of 94%, indicating that the learning was well-implemented. Based on the test results, the researcher found that 19 students scored above 60, which means that 83% of the students in this class have completed the course and met one of the effectiveness criteria.