Science, Technology, Engineering, and Mathematics (STEM) education initiatives have placed pressure on teachers to bring technology tools into classroom, including three-dimensional (3D) printing. Yet, little research has examined what specific math skills are required for 3D printing technology. This article describes a follow-up analysis of…

This study investigated the relationship among critical motivational variables and mathematics achievement as middle grades students engaged in a reform-oriented curriculum, "Mathematics in Context." We tested 327 students in fifth, sixth, and seventh grade before and after two years of implementation. We performed a path analysis with…

This study focused on accelerating development of science knowledge and understanding at the primary level (grades 1-2) as a means for enhancing reading comprehension (i.e. early literacy). An adaptation of a grade 3-5 cognitive-science-based, instructional model ("Science IDEAS") that integrated science with reading and writing, this…

A variety of research has pointed to the interdependent linkage among vocabulary knowledge, reading comprehension, and level of literacy. With this point in mind, the present study addressed the question of whether student vocabulary acquisition could be accelerated by using a multi-part, semantic word-family-oriented learning strategy to…

Conceptualized eight different types of measurement models for a test composed of testlets and studied the goodness of fit of those models to data using data from the Iowa Tests of Basic Skills and simulated data. The essentially tau-equivalent model and the congeneric model provided worse model fit than the other measurement models. (SLD)

Technical problems with norm-referenced achievement testing that can lead to the erroneous evaluation of schools for Chapter 1 Program improvement is discussed, and an alternative testing model is presented. The history of Chapter 1 testing and evaluation policies is briefly reviewed, and problems with the norm-referenced model are explored. Data…