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The Ecosytem Thematic Teaching Using Problem Based Learning Model to Enhance Student’s Critical Thinking Skill

The ecosystem is a lesson that studies the interrelationships between the living and the environment both biotic components and abiotic interplay. Students are required to understand the interaction between living things and life form a unity, order and material characteristics of a complex ecosystem, abstract and difficult to understand, especially for elementary school students. This study aims to 1) how to package the ecosystem material into modules that are easy to understand the student in the learning ecosystem. 2) to improve the skills of critical thinking on the matter ecosystems. Quasi-experimental research methods post-test study design with only non-equivalent control group design. Participants do research at State Primary School Surakarta with sample amounted to 66 students. The sampling technique is cluster random sampling. The collection of data by the method of test and non-test. The results showed that the effect size was large criteria, meaning ecosystem-based modules problembased learning models provide a large positive impact influence on contribution. It can be concluded that an ecosystem can be packaged into modules with the resulting models are thematic learning modules-based ecosystem theme of problem-based learning so easy to understand the student in the learning ecosystem. Implementation of thematic learning modules-based ecosystem theme of problem-based learning can improve students' critical thinking skills in the ecosystem material. Keywords— Thematic Teaching, Problem Based Learning, Critical Thinking Skills