Binar Kasih Sejati, Harry Firman, Ida Kaniawati
Twenty-first century is a century of technology, a rapid development of scientific studies and technology make them relied heavily on each other. This research investigated about the effect of STEM-based workbook in enhancing students' STEM competencies in terms of knowledge understanding, problem solving skill, innovative abilities, and responsibility. The workbook was tried on 24 students that applied engineering design processes together with mathematics and science knowledge to design and create an egg cracker. The result showed that the implementation of STEM-based workbook on lever system in human body is effective to improve students' STEM competencies, it can be proven by students' result on their knowledge understanding improvement which can be seen from normalized gain (<g>) score is 0.41 and categorized as medium improvement, students' problem solving skill is also improving where it obtained a medium improvement with normalized gain as much as 0.45. Innovative abilities also encountered an the improvement, the workbook analysis obtained a higher score which means students can be more innovative after finishing their workbook. Last, students' responsibility is keep improving day by day, students' effort gain the highest score it means that the students become more responsible after implementation of STEM-based workbook. All of the results are supported with the response of students towards STEM-based workbook implementation which showed positive response in all indicators. © 2017 Author(s).
Science Education Program on Graduates School, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung, Indonesia; Department of Chemistry Education, Science and Math Faculty, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi 3 No. 229, Bandung, Indonesia; Department of Physics Education, Science and Math Faculty, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudhi No. 229, Bandung, Indonesia
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