Argues that the transfer of plasmid from a bacterium to a plant cell has received little attention. Presents an experiment for studying this type of genetic transformation using the causative agent of crown gall, a malignant plant tumor. (DDR)

Reports on a study of seventh-grade students' interactions in small groups during a biology laboratory activity. Finds that girls have the potential to perform equally as well as do boys in the science laboratory and that both individual and gender differences contribute to students' differential verbal communication and laboratory engagement.…

Explains a laboratory activity in which students study the effects of balanced and unbalanced nutrition on individuals' health by examining simulated urine samples. Uses a journal writing approach and includes laboratory instructions. (YDS)

Educational institutions that wish to implement a specialized teaching laboratory often have a variety of obstacles to overcome. Some of these obstacles are related to adapting existing classroom infrastructure, building the laboratory, and meeting the demands for multiple-use classrooms to maximize the return on investment. In some cases, such as…

The study examines how social and cultural factors mediate the teaching and learning of science in an Australian high school. Grade 10 students, many of them new migrants, often transient and from circumstances of economic hardship, were taught a 5-week unit on chemistry by a teacher with social and cultural histories similar to those of most of…

Various elementary schools and middle schools across the U.S. have purchased one or more mobile laboratories. Although the wireless labs have provided more classroom computing, teachers and technology aides still have mixed views about their cost-benefit ratio. This is because the proliferation of viruses and spyware has dramatically increased…

We describe an eight-week summer Young Scientist in Training (YSIT) internship program involving middle and high school students. This program exposed students to current basic research in molecular genetics, while introducing or reinforcing principles of the scientific method and demonstrating the uses of mathematics and chemistry in biology. For…

Whether in the science or language laboratory, carrying out health care procedures or demonstrating performance arts, faculty can improve skill evaluation through transparency and authenticity in exam construction, format, and grading.

Incorporating inquiry-based learning in the college-level introductory biology laboratory is challenging because the labs serve the dual purpose of providing a hands-on opportunity to explore content while also emphasizing the development of scientific process skills. Time limitations and variations in student preparedness for college further…

To date, little of the ecological research on biological diversity and ecosystem functioning has been carried out in agricultural systems, despite the fact that agriculture is a major contributor to loss of native habitats and species. However, agricultural research has demonstrated that polycultures of multiple crop species can have higher total…

Over the last decade, remote instruments have become widely used in astronomy. Educational applications are more recent. This paper describes a program to bring radio astronomy into the undergraduate classroom through the use of a remote research-grade radio telescope, the MIT Haystack Observatory 37 m telescope. We examine the effectiveness of…

This article presents the authors' perspectives on Electronic Collaborative Educational Learning Laboratory (ECELL), an innovative summer school experiment conducted over 5 years from 1997 to 2001. The authors offer a detailed picture of the ECELL as a philosophy of professional development, as an organizing framework, and as a community of…

Newborn screening has existed as a state-based public health service since the early 1960s. Every state and most territorial jurisdictions have comprehensive newborn screening programs in place, but in the United States a national newborn screening policy does not exist. This results in different administrative infrastructures, screening…

As students apply their knowledge of scientific concepts and of science as a method of inquiry, learning becomes relevant. This laboratory exercise is designed to foster students' understanding of the genetics of quantitative traits and of the nature of science as a method of inquiry by engaging them in a real-world business scenario. During the…

This qualitative study looked at how early childhood teachers talk about and interact with the most powerful children in their classrooms--the student leaders. Relying primarily on interviews with six teachers in early childhood classrooms (infants, toddlers, and preschoolers) within a University-affiliated center, this paper reconsidered…