Investigates the use of a hands-on laboratory program to improve attitudes toward science and increase achievement levels in science knowledge among students in a 9th grade physical science course. Reports that students with regular laboratory instruction scored significantly higher in achievement of science knowledge than those without laboratory…

Describes a two-hybrid research project incorporated into a molecular biology course that contains both a lecture section and a laboratory section. (Author/KHR)

Conducts two studies that asked whether undergraduates who attended one-to-one conferences on rough drafts improved as writers. Notes the first year focused on peer tutors, so few changes remained for students to make, and results were inconclusive; but the second year focused on a professional tutor. Finds 65% of revisions made afterwards were in…

A method of obtaining a crude mitochondrial extract from sheep and beef heart is described. The respiratory substrates succinate and malate are examined as well as the inhibitory effect of malonate. An interface with a microcomputer for plotting colorimeter results is discussed. (Author/CW)

Schools should be committed to health and safety standards in vocational programs. The facilities and equipment should provide a safe environment, responsibility for preventing injuries should rest with administrators and instructors, and adequate safety education should be provided to all vocational students. (SK)

Discusses how English teachers can work with other departments to promote interdisciplinary approaches to teaching. Describes sharing writing labs; producing television news reports; engaging in a school-wide theme week; an "academic" Olympic Games; vocabulary exercises in the social studies classes; mock trials; and a team-taught social…

Described is an activity which uses a 96-well reaction plate and soda straws to construct a model of the periodic table of the elements. The model illustrates the ionization energies of the various elements. Construction of the model and related concepts are discussed. (CW)

Described is a simple test tube method developed lead analysis of samples of roadside soil. The relationship between the results and the traffic flow indicate car exhausts are the major source of lead pollution. Materials and procedures are detailed. An example of results is provided. (Author/CW)

Presented is a brief history of manufacturing chocolate and an outline of production methods. Describes laboratory techniques used to monitor liquid chocolate viscosity. Discusses a simple experiment which can be performed in the classroom. (Author/CW)

Considered are the underlying ideas of nucleophilic substitution and some of the misconceptions regarding this topic. Discusses methods for teaching this topic and includes definitions for key ideas and terms. (Author/CW)

Contends that the collaborative learning occurring in a writing center is ethical. Argues that educating young writers is more important than certifying their ability; that research demonstrates the efficacy of collaborative learning; and that inexperienced writers are entitled to the same collaborative help that professional writers expect and…

Describes two models of interaction between the writing center and entire classes (required attendance and tutor assignments) which led to practical, pedagogical, and philosophical problems. Describes a peer group critique model which overcomes such problems and helps large numbers of students learn the value of discussing ideas and drafts with…

Described is a laboratory exercise designed to introduce students to the theory and practice of gene mapping including RNA extraction, sucrose density gradient centrifugation, labelling of nucleic acids in vitro, DNA extraction, digestion of DNA with restriction enzymes, and the southern hybridization analysis. Procedures and sample results are…

Presented are system concepts with examples of various vendor approaches for implementing laboratory local area networks. (CW)

Common notions about what college writing centers are and do are examined so that faculty and students may understand how to make the best use of them. Issues discussed include their organizational status and role, audience, and specific functions and activities. The structure and objectives of tutoring sessions is briefly addressed. (MSE)