Abstract:
The crabs are organisms that have a major role in the mangrove
ecosystem. The preservation of the mangrove ecosystem cannot be
separated from the roles and responsibilities of humans. This can be
started by creating awareness and practicing thinking skills to provide
solutions to various existing environmental problems. According to the
results of the TIMSS study, the low scientific ability of Indonesian
students, especially its implementation in the form of scientific literacy,
has not shown a good improvement so that learning innovations are
needed, one of which is the manufacture of environment-based teaching
materials. The purpose of this study was to describe the practicality of the
teaching materials "Crab Types in the Mangroves Area" in training
students' critical thinking skills at MAN Tanah Laut. The type of research
used is the Tessmer formative test. The research data were analyzed
descriptively, practical data included the feasibility of using teaching
material and student responses, indicating that the teaching materials
developed were practical for use in learning and could improve the critical
thinking skills of MA students.
