Multilevel modeling (MLM) is frequently used to detect group differences, such as an intervention effect in a pre-test--post-test cluster-randomized design. Group differences on the post-test scores are detected by controlling for pre-test scores as a proxy variable for unobserved factors that predict future attributes. The pre-test and post-test…

The development of numerical abilities was examined in three groups of 5 year-olds: one including 13 children accomplishing a numerical training in pencil-and-paper format (EG1); another group including 21 children accomplished a homologous training in computerized format; the remaining 24 children were assigned to the control group (CG). The…

The Partnership for Assessment of Readiness for College and Careers (PARCC) field tests during the spring of 2014 provided an opportunity to investigate the quality of the items, tasks, and associated stimuli. HumRRO conducted several research studies summarized in this report. Quality of test items is integral to the "Theory of Action"…

In this study, the link between mathematics achievement, curriculum, teaching methods and resources used in the classrooms is investigated at an international level, allowing for country-specific factors potentially affecting educational achievement. More specifically, the aim of this research was twofold: on the one hand to investigate the…

English Learner (EL) students in the United States are historically lower achieving students than their native- English-speaking peers. There are a number of contributing factors for the achievement gap. In recent years, the U.S. Department of Education has undertaken various initiatives to address some of the known factors to improve education…

"ACCESS", A Culture Creating Effective Systems for Success, was a three-year Investing in Innovation (i3) development grant funded by the Office of Innovation and Improvement, U.S. Department of Education. The "ACCESS" grant led the way for a district-wide redesign of educational practices based on the novel approach of…

Charter schools are a relatively new phenomenon in American education. Since the first charter school opened in Minnesota in 1991, they have expanded to 42 states and represent 6.2% of all public schools in the country. This growth has been attributed to a number of factors, chief among them evidence that charter schools can improve performance…

Integrating the properties of computer algebra systems and dynamic geometry environments, Geogebra became an effective and powerful tool for teaching and learning mathematics. One of the reasons that teachers use Geogebra in mathematics classrooms is to make students learn mathematics meaningfully and conceptually. From this perspective, the…

Background: This article reports contributions of an assessment tool called Portfolio of Evidence (PE) in learning college geometry. Material and methods: Two classes of second-year students from one Ethiopian teacher education college, assigned into Treatment and Comparison classes, were participated. The assessment tools used in the Treatment…

We examined the effectiveness of (a) a working memory (WM) training program and (b) a combination program involving both WM training and direct instruction for students with geometry difficulties (GD). Four students with GD participated. A multiple-baseline design across participants was employed. During the Phase 1, students received six sessions…

This study examined the effects of first-grade teachers' emotional support on task persistence and academic skills in the sixth grade and the mediational role of children's academic self-concept in these effects. Participants were 524 children (263 boys, X-bar age in the first grade = 7.47 years), their first-grade homeroom teachers (n = 53), and…

This small-scale action research study examines the students' ability in using their mathematical skills when performing order of operations in numerical expressions. In this study, the "hierarchy-of-operators triangle" by Ameis (2011) was introduced as an alternative BODMAS approach to help students in gaining a better understanding…

This article describes mathematics teachers' evaluation practices and the reasoning and beliefs that support those practices. The data were collected in two Portuguese schools representing very different results in the national exams, through semi-structured interviews with mathematics teachers and departmental curriculum coordinators as well as…

Given the abundance of literature describing the strong relationship between inquiry-based teaching and student achievement, more should be known about the factors impacting science teachers' classroom inquiry implementation. This study utilises the theory of planned behaviour to propose and validate a causal model of inquiry-based teaching…

Khan Academy is a large and popular open educational resource (OER) with little empirical study into its impact on student achievement in mathematics when used in schools. In this study, we examined the use of Khan Academy as a mathematics intervention among seventh grade students over a 4-week period versus a control group. We also compared…