Abstract:
Abstract. Development research has been carried out to produce teaching materials for basic
chemistry learning materials based on STEM in a wetland context to improve scientific literacy
that is valid, practical, and effective. This type of research is Research and Development (R &
R&D) with a 4D development model modified into 3D (define, design, and develop). The trial
of the developed teaching materials was carried out in a class in the first Basic Chemistry
course consisting of 28 students. Data collection techniques used validation sheets, readability
questionnaires, response questionnaires, observation sheets, and scientific literacy tests. Data
analysis used descriptive analysis. The results showed that the developed teaching materials
had met the following criteria: (1) Valid; judging from the value of the feasibility aspects of
content, presentation, language, and media, each of which obtained very valid criteria. (2)
Practical; reviewed from the results of the readability of teaching materials in individual and
small group tests, the criteria are practical and very practical. Students' responses to teaching
materials have very practical criteria, and observations of the ability of teachers to use teaching
materials and manage their respective classes get very good criteria. (3) Effective, seen from
the results of the N-gain scientific literacy showing a high increase. With the results of this
development, it can be said that the STEM-based teaching materials for basic chemistry
learning to improve scientific literacy in the context of wetlands are suitable as teaching
materials
