It is known that students' problem-solving abilities are still relatively low, there is a need for reasons so that an effective learning model can be developed and involves students in the learning process. The aim of this development research is to comprehensively examine the factors causing the low level of geometric problem-solving abilities that have occurred to date, as well as comprehensively examine the process and results of development models that meet the criteria for improving geometric problem-solving abilities. The research method used is development research or Research & Development (R&D) with the ADDIE model with the initial step of making a flow diagram. The stages include: (1). Analysis, (2). Design, (3). Development, (4). Implementation, and (5). Evaluation. The research subjects were students in junior high school. The results of the development research are a learning model that can be a supplement/alternative for teachers in the learning process, showing that the Bima Local Culturally Based Discovery learning model was validated by 6 experts with the results stating that it was valid, that the learning tool was a test instrument for higher geometric problem-solving abilities. compared to other learning tools. Based on product trials, it was also carried out to obtain data on the level of effectiveness of the learning process using the BL-based Discovery model which was developed in the form of effectiveness data obtained from the results of the initial test and the final test.

Keywords: Discovery Learning Model, Geometry Problem Solving, Local Culture