[beta]-lactamases are hydrolytic enzymes that inactivate the [beta]-lactam ring of antibiotics such as penicillins and cephalosporins. The major diversity of studies carried out until now have mainly focused on the characterization of [beta]-lactamases recovered among clinical isolates of Gram-positive staphylococci and Gram-negative…

Motivation to teach is essential to educating all children in the public schools. This study examined the anticipated self-determination of pre-service teachers to teach in classroom settings that varied in the ethnic and racial composition of the students in the classes. Additionally the cultural responsiveness of participants was measured to…

A recently proposed theory of the spacing effect [Raaijmakers, J. G. W. (2003). Spacing and repetition effects in human memory: application of the SAM model. "Cognitive Science," 27, 431-452.] suggests that the spacing effect is conditional on study-phase retrieval leading to two groups of students showing different magnitudes of the spacing…

Good enrollment managers know that keeping current enrollment must be Job Number One and that maintaining enrollment must be the concern of all campus constituencies. However, a large number of students are "lost" during registration due to closed classes. Lost enrollments are a largely invisible phenomenon that represents frantic and…

The selection of children in England's schools for different types of education can be seen operating at three levels: between schools, within schools and within classes. This article deals mainly with the second--the allocation of pupils to classes--but it also refers to selection for secondary education and to the grouping of pupils within…

The Australian Government report Teachers for the 21st Century: Making the Difference (DEST, 2000) highlighted that teachers were central to student learning, and that there was a need for professional development for teachers in order for them to adapt to changing student needs. These ideas are not new and have been have been supported by other…

High schools that enable educators to nurture the distinctive interests and talents of all groups of students can help more students stay in school and find the motivation to prepare for college and careers. By implementing six clear-cut ideas, or conditions, that evidence shows can lead more students to success, schools and communities can…

This study used qualitative methods to investigate the teaching of high school mathematics teachers teaching in tracked schools. A comparison between two tracked classes, one honors class and one regular class, was done for each of two participants. The study addressed the following research questions: (1) How do the teachers construct the two…

This paper develops a model for longitudinal student achievement data designed to estimate heterogeneity in teacher effects across students of different achievement levels. The model specifies interactions between teacher effects and students' predicted scores on a test, estimating both average effects of individual teachers and interaction terms…

This study, Helping Alleviate Statistical Anxiety with Computer Aided Statistics Classes, investigated whether undergraduate students' anxiety about statistics changed when statistics is taught using computers compared to the traditional method. Two groups of students were questioned concerning their anxiety about statistics. One group was taught…

What constitutes successful practice for supervision of postgraduate students at an Open and Distance learning institution? In this article I describe a limited experiment in on-line teaching using a group of postgraduate students at the University of South Africa (Unisa). While the experiment has obvious limitations including the short time in…

Background/Context: Considerable controversy surrounds the issue of whether high-stakes statewide accountability programs have led to more equitable educational opportunities for all students. Some researchers suggest that these programs have focused attention on improving the achievement of students of color from low socioeconomic backgrounds.…

The purpose of this study was to understand the extent to which students' psychological sense of community was influenced by IM use using the psychological sense of community theoretical framework created by McMillan and Chavis (1986), and the student development theoretical frameworks created by Schlossberg (1989) and Astin (1984). Thus, this…

This study evaluated the effects of a one-day ropes course on students' classroom involvement and affiliation. Middle and junior high school students who participated in the ropes course were from classes designed for students at risk for emotional and behavioral disorders. Using the Classroom Environment Scale (CES) Short Form, students evaluated…