DEVELOPMENT OF STUDENT WORKSHEET WHICH CONTEXTUAL APPROACH ORIENTED TO TRAIN CRITICAL THINKING SKILLS ON REACTION RATES SUBJECT MATTER IN STUDENT GRADE XI SENIOR HIGH SCHOOL

Abstract

The aims of this research are to know the feasibility of student worksheet which contextual approach oriented  to train critical thinking skills on reaction rates subject matter. Besides that, the aims of this research to know the critical thinking skills and response of students. The research method used R&D that consists of 10 steps. But in this research was just until limited trial. The student worksheet had been reviewed by 2 chemistry lecturers and 1 chemistry teacher and validated by 1 chemistry lecturer and 2 chemistry teachers then had been tested on 15 students in SMA Negeri 1 Kebomas. The result of this research showed that the student worksheet which contextual approach oriented to train critical thinking skills on reaction rates subject matter had been developed was feasibility to use. It was shown based on overall lecturer and teacher of chemistry assessment based on evaluation of contextual approach suitability, content, presentation, language and graphical in a row are 81,87%, 84,61%, 84,67%, 85,33%, and 84,76%. As well as student response was very positive based on evaluation of contextual approach suitability, content, presentation, linguistic and graphical in a row are 91,42%, 86,67%, 89,33%, 83,33%, dan 86,67% in good and very good category. Thus, student worksheet contextual approach oriented to train critical thinking skills reaction rates subject matterwas expressed very feasible and can be used.

Keywords: Student worksheet, contextual approach, critical thinking skills, rates reaction

Penelitian ini bertujuan untuk mengetahui kelayakan LKS berorientasi pendekatan kontekstual untuk melatihkan keterampilan berpikir kritis materi pokok Laju Reaksi. Selain itu, penelitian ini juga bertujuan untuk mengetahui keterampilan berpikir kritis dan respon siswa setelah menggunakan LKS yang dikembangkan. Rancangan penelitian yang digunakan adalah R&D yang terdiri dari 10 langkah. Namun pada penelitian ini hanya terbatas sampai enam langkah saja yaitu ujicoba produk. Telaah dilakukan oleh 2 orang dosen kimia dan 1 guru kimia dan divalidasi oleh 1 dosen kimia dan 2 guru kimia serta diujicobakan pada 15 siswa kelas XI SMA Negeri 1 Kebomas. Hasil penelitian menunjukkan bahwa LKS berorientasi pendekatan kontekstual untuk melatihkan keterampilan berpikir kritis materi pokok Laju Reaksi layak digunakan. Hal ini ditunjukkan dari persentase hasil penilaian dosen kimia dan guru kimia ditinjau dari aspek kesesuaian dengan pendekatan kontekstual, isi, penyajian, kebahasaan, kegrafisan secara keseluruhan memperoleh persentase berturut-turut sebesar 81,87%, 84,61%, 84,67%, 85,33%, dan 84,76%. Serta respon siswa yang sangat positif ditinjau dari aspek kesesuaian dengan pendekatan kontekstual, isi, penyajian, kebahasaan, kegrafisan secara keseluruhan memperoleh persentase berturut-turut sebesar 91,42%, 86,67%, 89,33%, 83,33%, dan 86,67%. Sehingga dapat disimpulkan bahwa LKS berorientasi pendekatan kontekstual untuk melatihkan keterampilan berpikir kritis materi pokok Laju Reaksi sangat layak dan dapat digunakan.

Kata kunci :  LKS, pendekatan kontekstual, keterampilan berpikir kritis, Laju Reaksi