This study induced the students to be more active and able to design discovery activities so that they can communicate the material's concepts well. Students can use their activities to find a solution to problems with inquiry-based learning materials that were supplemented with a guided note-taking model. For this reason, a valid, practical, and effective inquiry-based learning device with a guided note-taking learning model in Basic Algebra courses is required. This study aimed to develop inquiry-based learning tools with a guided note for Basic Algebra courses that are valid, effective, and practical. The development model used in the study was the instructional development institute (IDI). The data sources were three Basic Algebra lecturers, seven small trial students, and 38 students in a large trial class. The validation of the developed learning device involved experts in mathematics, language, educational technology, and peers. The validity values of the developed learning devices were 80.97 and 78.61 with a highly valid category. The practicality value for the module was 90.33 or very practical. The student learning outcomes were improved with a gain score of 0.40 or moderate category. This study produced valid, practical, and effective inquiry-based learning tools with guided note-taking learning models for basic algebra courses.