This study aims to: 1) determine the process of developing geogebra-assisted local wisdom-based linear programming modules in improving valid and practical logical thinking skills 2) determine the effectiveness of developing geogebra-assisted local wisdom-based linear programming modules in improving logical thinking skills.

      The research method uses local wisdom-based linear program module development research assisted by Geogebra with a modified model from Plomp in five stages, namely, (1) initial investigation consisting of observation, literature study, needs analysis and initial research (2) design stage, namely instrument design and material design (3) the construction (realization) stage, namely the application and manufacture of prototypes based on the design stages that have been made (4) the trial stage namely expert validation, limited field testing, practicality testing and effectiveness testing (5) implementation stage.

      The results of the study concluded that: 1) the process of developing linear program modules based on local wisdom assisted by Geogebra in improving logical thinking skills was declared valid and practical as evidenced by the validation results of material experts and media experts with an average score of 4.16 good category and 71% practical category practical 2) the effectiveness of geogebra-assisted local wisdom-based linear program modules based on the results of the t test tobs=7.644 , ttabel=1.771, the mean pretest results were 57.8 and posttest 87.6 which means there was a significant increase in posttest results after being given a significant linear programming module effectively used in improving the ability to think logically