摘要:This research aimed to develop a definition maps-based plane geometry module to
improve the student teachers’ mathematical reasoning skills based on the level of
Van Hiele. This development research was to produce a product in the form of a
module at the college level. This research referred to the ADDIE model involving
five stages, i.e. analyze, design, develop, implement, and evaluate. The instruments
for data collection were observation sheet, Focus Group Discussion (FGD),
assessment sheets, questionnaires, and test. The collected data then were analyzed
usingAiken’s validity, descriptive and inferential statistical analysis. The
questionnaire instrument developed for student teachers was in a good category.
The instrument used to test the effectiveness of the module was in a good category.
A definition maps-based plane geometry module was in the criteria of feasible,
practical and effective. The module was significantly developed in improving
mathematical reasoning skills to rigor level.