The Colorado learning attitudes about science survey (CLASS) was given to 308 high school physics students in Almaty, Kazakhstan, where physics is taught every year through middle and high school. Student responses were tested using several different latent factor models: two based on those published in the recent literature and two new models…

Chemical symbol representation is used extensively in chemistry classrooms; however, due to its abstract nature, many students struggle with learning and effectively utilizing these symbolic representations, which can lead to ongoing failure in subsequent chemistry learning. Taking the perspective of learning progressions, this study identifies…