In this article, we extend Liao's test for across-group comparisons of the fixed effects from the generalized linear model to the fixed and random effects of the generalized linear mixed model (GLMM). Using as our basis the Wald statistic, we developed an asymptotic test statistic for across-group comparisons of these effects. The test can be…

Acquiring knowledge about science is an important part of developing scientific expertise. However, students can know many facts about science and yet fail to achieve highly on certain kinds of assessments, or to feel that the subject is personally meaningful. The concept of scientific understanding is examined to explain the gap that exists…

Multilevel bifactor item response theory (IRT) models are commonly used to account for features of the data that are related to the sampling and measurement processes used to gather those data. These models conventionally make assumptions about the portions of the data structure that represent these features. Unfortunately, when data violate these…

An astronomy "experiment" composed of three parts is described in the article. Being given necessary data a simple model of inner planets of the solar system is made in the first part with planets' circular orbits using appropriate scale. In the second part revolution of the figurines used as model representations of the planets along…

Item response models typically assume that the item characteristic (step) curves follow a logistic or normal cumulative distribution function, which are strictly monotone functions of person test ability. Such assumptions can be overly-restrictive for real item response data. We propose a simple and more flexible Bayesian nonparametric IRT model…

This Communication summarizes one of the invited papers to the Select 2016 BCCE Presentations ACS CHED Committee on Computers in Chemical Education online ConfChem held from October 30 to November 22, 2016. The ConfChem paper (included within Supporting Information) focuses on the results of one instructor's incorporation of social media into her…

"Transforming Science Assessment: Systems for Innovation," is a series of resources designed to provide state education leaders with: (1) Information about how states are currently pursuing statewide assessment systems in science; (2) Analyses of what features influence different approaches, with an eye to supporting state leaders as…

"Transforming Science Assessment: Systems for Innovation," is a series of resources designed to provide state education leaders with: (1) Information about how states are currently pursuing statewide assessment systems in science; (2) Analyses of what features influence different approaches, with an eye to supporting state leaders as…

This resource is part of a series of reports about challenges facing statewide science assessments and innovative solutions states are enacting to meet those challenges. Deciding to implement a system of assessments is a critical step toward ensuring that all students are getting the high-quality science education they need--but it is also…

School grades provide an easily understandable metric to measure the performance of a school. Parents and the general public can use the informational baseline school grade and its associated components to understand how well each school is serving its students. The school grades calculation was revised substantially for the 2014-15 school year to…

"Transforming Science Assessment: Systems for Innovation," is a series of resources designed to provide state education leaders with: (1) Information about how states are currently pursuing statewide assessment systems in science; (2) Analyses of what features influence different approaches, with an eye to supporting state leaders as…

The importance of high-tech careers has risen as the international competitiveness of US students on tests of science and math has declined. The problem is compounded by a persistent inequity in STEM participation and achievement in the US across gender and racial and ethnic groups. Bridgewater State University's Student Retention Enhancement…

Latvian Education Foundation presents methods and tools to reach comprehension and develop creative thinking. The Web page www.goerudio.com contains wordings of conceptions and patterns under training standards, as well as appropriate models/examples created by students and teachers, which interprets mentioned conceptions and patterns by use of…

This article shows the potential for using video responses to specific questions as part of the assessment process in an organic chemistry class. These exercises have been used with a postbaccalaureate cohort of 40 students, learning in an online environment, over a period of four years. A second cohort of 25 second-year students taking the…

This paper gives an overview of research on modelling science competence in German science education. Since the first national German educational standards for physics, chemistry and biology education were released in 2004 research projects dealing with competences have become prominent strands. Most of this research is about the structure of…