Development Of Science Literacy Learning Environment Instruments: Validity And Reliability

Abstract

One of the factors that affect students' science literacy is the learning environment. The purpose of the research is to develop valid and reliable science literacy learning environment instruments. The instrument was developed from the science literacy competency at PISA 2025 and the What Is Happening in This Class (WIHIC) instrument resulting in 33 items. The quantitative research method is used, while the sampling technique is purposive. Data was collected from 339 grade 11 students at MAN 11 Jakarta and MAN 19 Jakarta. The instrument dimension consists of science communication, science investigation, use of scientific information, teacher support, and cooperation. Data analysis uses Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) to check validity. The EFA result shows that 5 dimensions are formed and the CFA result shows that 1 item is invalid. Reliability is measured using the alpha cronbach value on each dimension. The instrument is reliable because the test results show that the consistency and stability of the measurement are met. The results showed that 32 items were valid and reliable in measuring the science literacy learning environment.