PENGEMBANGAN LKPD BERBASIS PROBLEM BASED LEARNING UNTUK MELATIHKAN KETERAMPILAN BERPIKIR KRITIS PADA MATERI LARUTAN PENYANGGA 

DEVELOPMENT OF PROBLEM BASED LEARNING STUDENTS WORKSHEET TO TRAIN  CRITICAL THINGKING SKILL IN BUFFER SOLUTION MATERIAL

ABSTRAK

Penelitian ini bertujuan mengembangkan LKPD berbasis Problem Based Learning untuk melatihkan keterampilan berpikir kritis pada materi larutan penyangga yang layak digunakan. Kelayakan LKPD ditinjau dari validitas, kepraktisan dan keefektifan. Metode penelitian  yang dipakai adalah model pengembangan 4-D (Define, Design, Develop, and Disseminate) akan tetapi hanya sampai tahap develop (pengembangan). Validitas ditinjau dari validitas isi dan validitas konstruk yang meliputi kebahasaan, penyajian dan kegrafisan. Kepraktisan ditinjau dari respon serta aktivitas peserta didik ketika pembelajaran menggunakan LKPD dan keterlaksanaan sintaks model pembelajaran. Keefektifan ditinjau dari peningkatan hasil tes keterampilan berpikir kritis peserta didik yang diujikan secara terbatas pada 12 peserta didik di SMA Negeri 3 Sidoarjo. Data hasil penelitian dianalisis secara deskriptif kuantitatif. Hasil validitas LKPD dinyatakan sangat valid dengan persentase validitas sebesar 88,28%. LKPD dinyatakan sangat praktis karena mendapatkan respon positif dengan persentase 92,36%, didukung dengan keterlaksanaan sintaks model pembelajaran serta aktivitas peserta didik yang sangat baik. Hasil peningkatan keterampilan berpikir kritis dinyatakan dengan n-gain score rata-rata ≥ 0,7 dengan kategori tinggi dan LKPD dinyatakan sangat efektif. Dilihat dari hasil validitas, kepraktisan dan keefektifan, LKPD yang dikembangkan layak digunakan.

Kata Kunci : LKPD, Problem Based Learning, Keterampilan Berpikir Kritis.

ABSTRACT

This study aims to develop of Problem Based Learning student worksheet to train critical thinking skills on suitable buffer solution material for use. The feasibility of student worksheet is viewed from its validity, practicality and effectiveness. The research method used is the 4-D development model (Define, Design, Develop, and Disseminate) but only up to the develop stage. Validity is viewed from the content validity and construct validity which includes language, presentation and graphics. Practicality is viewed from the responses and activities of students when learning uses student worksheet and the implementation of the learning model syntax. The effectiveness is seen from the increase in the results of the critical thinking skills test of students who were tested on a limited basis to 12 students at SMA Negeri 3 Sidoarjo. The research data were analyzed descriptively quantitatively. The results of the validity of the student worksheet were stated to be very valid with a validity percentage of 88.28%. Student worksheet is stated to be very practical because it gets a positive response with a percentage of 92.36%, supported by the implementation of the syntax of the learning model and excellent student activities. The results of the improvement in critical thinking skills were stated by an average n-gain score of ≥ 0.7 in the high category and student worksheet was declared very effective. Judging from the results of the validity, practicality and effectiveness, the developed student worksheet is suitable for use.

Keywords : Student Worksheet, Problem Based Learning, Critical Thinking Skills.