Applications of a simple approximation of Bessel functions of integer order, in terms of trigonometric functions, are discussed for several examples from electromagnetism and optics. The method may be applied in the intermediate regime, bridging the "small values regime" and the "asymptotic" one, and covering, in this way, an area of great…

The November 13, 2009 Conference of the National Coalition on School Diversity brought together more than 300 people from across the nation. This included parents, teachers, school administrators, local and state elected leaders, long time civil rights advocates, community organizers, and government officials. Participants engaged in a…

Drawing on data collected during the second year of a longitudinal qualitative study that followed over 10 Latino/a bilingual students, this article foregrounds the experiences of participants during their sixth-grade year. The principle data sources included structured and unstructured interviews with teachers and students, school observations,…

Given the importance of teachers to student learning, it is important to understand how schools of choice differ in terms of the types and uses of human capital inside schools. Despite research that highlights important differences in the qualifications and staffing practices of schools of choice, there is no evidence about whether observed…

Describes theme schools developed for students in Dearborn (Michigan) Public Schools, such as an elementary school for science and a high school for engineering and technology. Includes a discussion of benefits and challenges. (PKP)

This article is intended as a guide for teaching geomagnetism in a high school or university introductory physics class. Many students find this subject fascinating. Instructors, however, often have a difficult time introducing this topic at an elementary level. Suggestions will be made on how to accomplish this using three electricity and…

In the so-called electric Aharonov-Bohm effect, a quantum interference pattern shift is produced when electrons move in an electric field free region but, at the same time, in the presence of a time-dependent electric potential. Analogous fringe shifts are observed in interference experiments where electrons, travelling through an electrostatic…

The mass of electromagnetic radiation in a cavity is considered using the correct relativistic approach based on the concept of a scalar mass not dependent on the particle (system) velocity. It is shown that due to the non-additivity of mass in the special theory of relativity the ensemble of chaotically propagating mass-less photons in the cavity…

The stereochemical features of molecules can have far reaching effects in many areas of science including medicinal chemistry, materials chemistry, and supramolecular chemistry. There have been many techniques developed over the years to determine the absolute configuration of alkenes: the R,S configuration of chiral centers and the most stable…

This study reports changes in kindergarten students' understanding of magnets after participating in a series of hands-on, inquiry-based lessons. The lessons focused on the dipole nature of magnets and employed a visual representation of a magnet as an arrow for the kindergarten students. This dipole model was used to describe how magnets interact…

We suggest the creation of a Global Web Laboratory (we call it "GloLab") for scientific purposes and teaching experiments online. In this article, we discuss the main principles and problems of building such a global Internet-laboratory. An example of a current working laboratory for teaching magnetism experiments online is also discussed.

A two-course sequence in electromagnetics (EM) was developed in order to address a perceived lack of student learning and engagement observed in a traditional, lecture-based EM course. The two-course sequence is named VECTOR: Vitalizing Electromagnetic Concepts To Obtain Relevance. This paper reports on the first course of the sequence. VECTOR…

Background/Context: In an age of test-driven accountability, many schools are returning to banking pedagogies in which students passively take in content. Inquiry-based instruction offers one approach for actively involving students in meaningful learning activity, however, research on inquiry pedagogies often focuses on academic accomplishments.…

In this article, the author profiles Columbus Magnet School in Norwalk, Connecticut. In 1979, Columbus School was an inner-city neighborhood school with an 87% minority population. In order to comply with federal desegregation guidelines, the school was compelled to either integrate the student body to reflect that of the larger community or close…

This study explores the relationship between interaction rituals, student engagement with science, and learning environments modeled on communities of practice based on an ethnographic study of an eighth grade urban magnet school classroom. It compares three interactional events in order to examine the classroom conditions and teacher practices…