Development of Teaching Materials Based on Problem Based Learning (PBL) Models in Chemistry Materials for Grade XII SMA/MA Effi Nurma Husnitha (1), Ramlan Silaban(2), Manihar Situmorang(2)
(1)Program Studi Pendidikan Kimia, Pascasarjana, Universitas Negeri Medan, Indonesia
(2)Departement Kimia Universitas Negeri Medan, Indonesia
Abstract
This reserch is development reserch the purpose of this study was to produuce Problem Based Learning chemistry teaching materials with buffer solution material. The development model used is the ADDIE model which is based on 3 stages namely (Analysis, Design, Development). The validators in this study were material expert lectures, media experts, and chemistry teachers. The results of the validation of this product have an average value that is classified as valid without the need for revision (3,68), while according to areview of 3 chemistry teachers, the average value is also valid without the need for revision (3,80). The results of the study indicate that the chemistry teaching materials in yhe buffer solution material were classified as valid to be used as a learning resource for students.
Keywords: Keywords: Teaching materials, Problem Based learning, Buffer Solutions, Validity
