Pengembangan LKS dengan Pendekatan Saintifik Berbasis Discovery Learning Pada Materi Hukum Dasar Kimia untuk Pembelajaran Kelas X SMA/MA

Abstract

Abstract-The purpose of this research are to develop a Student Activity Sheet on discovery-based learning of Basics Laws of Chemistry and test the validity and practicality of LKS produced. This type of research is the Research and Development (R & D). Development models used in this study is a four D models, namely (1) define , (2) design , (3) develop and (4) disseminate. This study is limited to the development stage. The instrument used in this research is the questionnaire of validity and practicalities. LKS developed validated by 7 people validator, consisting of five chemistry lecturers and two chemistry teachers. Practicality test carried by four chemistry teachers and several X grade students of MAN 3 Padang. Based on the research that has been conducted, the product produced Student Activity Sheet discovery-based learning for material Basics Laws of Chemistry that its validity and practicality had been examined. LKS produced has an average value of 0.90 with the validity of the category of very high validity, average of teachers practicality is 0.85 with very high practicality categories and average of students practicality is 0.72 with high practicality category.

Aktivitas Katalitik Ekstrak Kunyit Putih Sebagai Pengatas Penyakit Kanker

“…Di perut, mata, mulut reaksi kimia pun terjadi. Reaksi kimia (8) terjadi pada mahkluk hidup,(manusia,hewan, tumbuhan) dan juga di alam, Suatu reaksi kimia (9) akan menghasilkan produk baru dengan sifat baru (10) . Reaksi kimia dapat terjadi secara spontan maupun tidak, cepat ataupun lambat.…”

Studi Kinetika Ekstrak Daun Jambu Biji sebagai Obat Penyembuh Diare

“…Dimana reaksi kimia [11][12][13][14][15] ada dikehidupan kita. Reaksi [16][17][18][19][20] sangat penting untuk kita. Reaksi [21][22][23][24][25] kimia [26][27][28][29][30] terdapat ditubuh kita, terdapat pada hewan maupun tumbuhan [31][32][33][34][35] .…”

“…Daun jambu biji adalah obat alami atau herbal [61][62][63][64][65] yang dapat mengobati diare atau sakit perut. Daun jambu biji adalah tumbuhan yang sangat mudah kita temukan dimana pun kita berada.…”

Studi Kinetika Eksrak Daun Jambu Biji Sebagai Obat Penyembuh Diare

“…Katalis (16) adalah suatu cara untuk mempercepat suatu kerja dari reaksi. Katalis (17) dan reaksi kimia (18) sangat berkaitan erat.…”