Pengembangan Lembar Kerja Peserta Didik Berbasis Konstruktivisme Lima Fase Needham pada Praktikum Materi Laju Reaksi Kelas XI di SMA Negeri 3 Palembang

Abstract

Abstract

LKPD practicum is not yet available in full, causing learning practicum not to be carried out effectively. Reaction rate material is one of the most important materials to be developed in LKPD practicum because it is able to increase students' understanding of chemical concepts. This study aims to produce valid, practical, and effective worksheets for reaction rates based on five-phase constructivism of Needham. This type of research is a Rowntree development research model modified with Tessmer's formative evaluation. The subject of this research is SMA Negeri 3 Palembang. Data collection techniques in the form of interviews, questionnaires and learning achievement tests. Data analysis in the form of a validation questionnaire was given to material experts, pedagogic experts and design experts. Practicality questionnaires were given to students at the one-to-one and small group stages. the results of student learning analysis are carried out at the field test stage by giving a pretest and posttest to determine the n-gain score. The results showed that the material validity was 0.93, the pedagogic validity was 0.88, and the design validity was 0.93 with all categories being very valid. The practicality of LKPD was obtained through the one to one evaluation stage of 0.772 in the high category and the small group evaluation stage of 0.664 in the high category. The effectiveness of LKPD was measured at the field test stage by obtaining an N-gain score of 79,4 in the high category. It can be interpreted that the LKPD practicum reaction rate based on five-phase constructivism of Needham is declared valid, practical, and effective.

Keyword: Development, Student Worksheets, Needham's Five Phases of Constructivism, Reaction Rate

Abstrak

LKPD praktikum belum tersedia secara lengkap sehingga menyebabkan pembelajaran praktikum tidak terlaksana secara efektif. Materi laju reaksi menjadi salah satu materi yang sangat penting dikembangkan dalam LKPD praktikum dikarenakan mampu meningkatkan pemahaman konsep kimia peserta didik. Penelitian ini bertujuan untuk menghasilkan LKPD praktikum laju reaksi berbasis konstruktivisme lima fase needham yang valid, praktis, dan efektif. Jenis penelitian ini merupakan penelitian pengembangan model Rowntree yang dimodifikasi dengan evaluasi formatif Tessmer. Subyek penelitian ini adalah SMA Negeri 3 Palembang. Teknik pengumpulan data berupa wawancara, angket dan tes hasil belajar. Analisis data berupa angket validasi diberikan kepada ahli materi, ahli pedagogik dan ahli desain. Angket kepraktisan diberikan kepada peserta didik pada tahap one-to-one dan small group. Analisis hasil belajar peserta didik dilakukan pada tahap field test dengan memberikan pretest dan posttest untuk menentukan skor n-gain. Hasil penelitian menunjukkan bahwa kevalidan materi diperoleh sebesar 0,93, kevalidan pedagogik diperoleh sebesar 0,88, dan kevalidan desain diperoleh sebesar 0,93 dengan kategori semuanya sangat valid. Kepraktisan LKPD diperoleh melalui tahap one-to-one evaluation sebesar 0,772 dengan kategori tinggi dan tahap small group evaluation sebesar 0,664 dengan kategori tinggi. Keefektifan LKPD diukur pada tahap field test dengan skor N-gain diperoleh sebesar 79,4 dengan kategori tinggi. Dapat disimpulkan bahwa LKPD praktikum laju reaksi berbasis konstruktivisme lima fase needham dinyatakan valid, praktis, dan efektif.

Kata kunci: Pengembangan, Lembar Kerja Peserta Didik, Konstruktivisme Lima Fase Needham, Laju Reaksi