Vertical scales are frequently developed using common item nonequivalent group linking. In this design, one can use upper-grade, lower-grade, or mixed-grade common items to estimate the linking constants that underlie the absolute measurement of growth. Using the Rasch model and a dataset from Curriculum Associates' i-Ready Diagnostic in math in…

Motivation plays a crucial role in mathematical competence, with motivated students tending to perform better than those who lack motivation. Given that teachers can play a significant role in fostering student motivation, the aim of this study was to investigate teachers' influence on students' motivation to learn mathematics. Alongside the…