Anisyah Fadhillah, Muhammad Fajar Marsuki, Sugiyanto Sugiyanto
The purpose of this study was to produce a conceptual understanding assessment instrument on the subject of "addictive and additives substances" during the Covid-19 pandemic. This development research was carried out using by carrying out three of four stages; the Define stage, the Design stage, and the Development stage. The assessment instrument from the development results consists of 11 Basic Competency Achievement Indicators, each of which is developed into three learning objectives so that the assessment instrument has 33 learning objectives (each learning objective is developed into three question indicator items). The total questions developed were 99 question packages and 18 of them were taken to be used as validation samples. Each question package consists of four types of questions; (1) true - false, (2) single choice, (3) the relationship between things, and (4) short answer. The assessment instrument developed covers the subject of "additives and addictive substances and their impact on health". The feasibility of this assessment instrument product was tested with two activities, (1) validation by experts from universities and (2) validation of user practicality by teachers and students. The assessment instrument developed is in the valid category based on the results of validation by experts with a score of 85.35%. For the level of practicality of the user by the teacher, the assessment instrument got a score of 98.61% with a very valid category. Furthermore, for the level of user practicality validity by students, the assessment instrument also received a very valid category with a score of 95.55%. © 2023 American Institute of Physics Inc.. All rights reserved.
Department of Science Education, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5, Malang, 65145, Indonesia
