Development of PBL STEM-Based Teaching Materials with Ethnomatematics Nuances for Students' Creative Thinking Ability

The ability to think creatively is the ability to generate new ideas, innovative solutions, and unconventional thoughts in response to a situation or problem.Creative thinking involves many aspects, including imagination, association of ideas, mental flexibility, and views that are different from the usual.Creative thinking needs to be grown in students because creative thinking is very important in learning which will greatly assist students in solving problems with various solutions.The use of appropriate learning model equipment can support the development of students' critical thinking skills.One effort that can be done is to use innovative teaching materials that combine various activities to develop students' creative thinking abilities.The purpose of this study is to describe the process of developing STEM-based teaching materials with a problem-based learning model on three-dimensional material, namely distance.This study uses the development method or the Research and Development method, namely 4D (define, design, develop, disseminate) but is limited to the develop stage.The data analysis technique of this research uses descriptive analysis techniques both qualitatively and quantitatively.Data collection uses a feasibility validation sheet, readability and student response questionnaires.The results showed that the average score of the eligibility of teaching materials was 81.66% in the appropriate category, the average score of readability of teaching materials was 90% in the easyto-understand category, and the average student response score to teaching materials was 99% with very good criteria.Thus, from this assessment it can be concluded that the teaching materials developed are feasible to use, easy to understand, and have a good response from students.The suggestions put forward are that other teachers/researchers are expected to be able to carry out the same research but develop teaching materials with different materials or abilities.