The National Council of Teachers of Mathematics (NCTM), has made an effort to increase the use of technology and the use of calculators into the classroom and curriculum. As a result, many studies and articles have been written on the subject of calculator use in the classroom. A review of over 600 studies revealed that it is not curricula that…

The purpose of this study is to explore elementary educators' perceptions regarding what it means to conceptually understand mathematics, the emphasis teachers place on utilizing evidence-based teaching processes, as identified as effective by National Council of Teachers of Mathematics (NCTM), and how these perceptions influence their…

Teaching science concepts for conceptual understanding has its challenges. Promoting conceptual change in the science classroom can be difficult because most concepts are complicated and counter-intuitive. This dissertation research aimed to determine the effect of teaching for conceptual understanding models on pre-service teachers' conceptual…

A primary purpose of cognitive diagnosis models (CDMs) is to classify examinees based on their attribute patterns. The Q-matrix (Tatsuoka, 1985), a common component of all CDMs, specifies the relationship between the set of required dichotomous attributes and the test items. Since a Q-matrix is often developed by content-knowledge experts and can…

This three-article dissertation considers the pedagogical practices for developing statistically literate students and teaching data-driven decision-making with the goal of preparing students for civic engagement and improving student achievement. The first article discusses a critical review of the literature on data-driven decision-making…

In the United States (US) and in the United Arab Emirates (UAE) students are still attaining poorly in high school mathematics despite efforts from educational leaders to improve the math curricula both in middle and high schools. Results of the Program for International Student Assessment (PISA) revealed that 31 countries out of 65 had better…

The purpose of this study was to ascertain whether certain contextual factors pertaining to principals and teachers influenced U.S. eighth grade students' math achievement. More specifically, the study comparatively examined the direct and mediating predictive influence of teacher instructional approaches (i.e., teacher-directed; constructivism),…

Cross-national comparisons of responses to survey items are often affected by response style, particularly extreme response style (ERS). ERS varies across cultures, and has the potential to bias inferences in cross-national comparisons. For example, in both PISA and TIMSS assessments, it has been documented that when examined within countries,…

This dissertation examines a vital catalyst in the globalization of education: international assessments--that involve testing and rankings--of student achievement in academic subjects. Nearly all high-income countries participate in international assessments such as Trends in International Mathematics and Science Study (TIMSS), Progress in…

The results from the 2007 Trends in International Mathematics and Science Study (TIMSS) revealed that the scores of fourth grade students in the 90th percentile showed no measurable change from the results of the first TIMSS assessment in 1995. Contrarily, the scores of the lowest performing fourth graders showed statistically significant…

There is a broad interest in narrowing achievement gaps among all groups of students and improving education by scientifically sound methods. On October 25, 2006, the United States Department of Education published new regulations allowing single-sex education in public schools whenever schools think it will improve student achievement. Thus far,…

The Third International Mathematics and Science Study (TIMSS) study revealed that test scores from high school students were below average in mathematics and science. Studies show that part of it stem from the traditional methods of teaching rather than the standards based teaching. According to the No Child Left Behind (NCLB) act, students should…

This study investigates the use of Lesson Study in three U.S. schools. Lesson Study is part of the culture of teaching in Japanese K-8 schools. Researchers in the United States brought the practice of Lesson Study ("jugyokenkyo" in Japanese) to light in the late 1990's while investigating reasons for differences in the performance of…