Development of Worksheets Based on Guided Inquiry on the Production of Hand Sanitizer from Mahonony Seed Extract (Swietenia mahagoni)

Abstract

This research aimed to develop a worksheet based on guided inquiry on colloidal class learning material. Hand sanitizer is one application of the colloid system. In this study, a hand sanitizer was made using an additional ingredient of mahogany seed extract as an active substance to replace alcohol as an antibacterial. The purpose of this study was to compile and determine the results of a guided inquiry-based worksheet validation test. The research method used was Design-Based Research (DBR). The results of the validation test by expert lecturers were declared valid with an average r-count value of 0.860. The worksheets produced are in accordance with the stages of guided inquiry-based learning and are feasible to be applied to colloid subjects in class XI science with a r-count of 0.83. The hand sanitizer produced was in accordance with SNI 2017 with a pH range of 6-8. This worksheet can later be applied in practical waste management and treatment.
 Keywords: worksheet, guided inquiry, hand sanitizer