<p>Research has been carried out on the development of modules with the Problem Based Learning (PBL) model based on wetland environments on the topic of acid-base solutions. This study aims to determine: the validity, practicality and effectiveness of module development. This study used a research &amp; development design of a 4-D development model that was modified into 3-D, the data collection techniques used a test of student learning outcomes and a questionnaire. The research was conducted at SMAN 3 Banjarmasin with a sample of 10 students of class of XI PMIA 3 for small-scale trials, 24 students of XI PMIA 3 for limited-scale trials, and class of XI PMIA 1 and XI PMIA 2 with total 74 students for testing in a wide scale. Validity can be seen based on the results of the validation, the practicality of the students’ responses, and the effectiveness of the students' learning outcomes. The results showed that the module was considered valid with an average score of 146.4 and a percentage of 91.58% (very valid), practical with a percentage of 82.90% (good), effective with an average N-gain score of 0.84 (high), the average score of N-gain is 0.87 (high) for class of XI PMIA 1 and 0.86 (high) for class of XI PMIA 2. The results of this study indicate that the module with the Problem Based Learning (PBL) model based on the wetland environment on the topic of acid-base solutions is declared valid, practical and effective for use as a learning resource for students.</p><p>  <strong><em></em></strong></p>

This research was conducted on the existence of problems in the form of low creative thinking skills and students' self-efficacy in learning. One way that can be done to solve this problem is by utilizing teaching materials in the form of modules that students can use for independent learning. Therefore, this research was conducted to develop science learning modules to improve the creative thinking skills and self-efficacy of class VIII students of junior high school. This type of research is Educational Design Research (EDR) using the Tessmer development model. The final result of the validation average is 3.49, which is in the very valid category. Therefore, based on the research results, the science learning module has been declared very valid to improve students' creative thinking skills and self-efficacy in learning science

This research is based on the existence of problems in the form of low critical thinking skills and students' self-efficacy in learning. One way that can be done to solve this problem is by utilizing teaching materials in the form of modules that students can use for independent learning. Therefore, this research was conducted to develop science learning modules to improve critical thinking skills and self-efficacy in class VII students of junior high school. This type of research is Educational Design Research (EDR) using the Tessmer development model. The final result of the validation average is 3.67, which is in the very valid category. Therefore, based on the research results, it can be concluded that the science learning module has been declared very valid for increasing students' critical thinking skills and self-efficacy in learning science.

Students in schools use techniques to keep up with the increasingly rapid development of the times. A module is the learning media. Lessons will be easier for students to understand if teaching materials are simple, practical, and relevant. However, activity in living things is still regarded as unsuitable learning material. This is because presenting the characteristics of objects to students in real terms can also be challenging. As a consequence, research and development of teaching materials for class VIII SMP/MTs based on critical thinking and decision-making skills are carried out in motion modules on living things. The goal of this research and development is to validate SMP/MTs class modules in order to improve critical thinking and decision-making skills. The Tessmer Formative evaluation development model is used in this type of research. Aspects of validity include content, presentation, and language. The research data were analyzed descriptively into categories. The results show that the CBSL module developed is in a very valid category with a value of 3.51, implying that this module appears to follow the objectives of learning science and is technically very feasible to be used as a science learning resource.