Included is a preliminary report of the analysis of questionnaires returned by biologists teaching in two-year colleges. Data are provided on areas of training, type of previous employment, types of courses taught, measures of teaching load, journals used, and salaries and grants received. The reported information includes the following: two-year…

Included are instructional materials designed for use with disadvantaged students who have a limited reading ability and poor command of English. The guide is the first volume of a two volume, one year program in life science and contains these three units and activities: Measurement, 7 activities; Ecology, 12 activities; and Energy Processes, 24…

Included are instructional materials designed for use with disadvantaged students who have a limited reading ability and poor command of English. The guide is the second volume of a two volume, one year program in life science and contains these two units and activities: Reproduction and Development, 21 activities; and Genetics, 10 activities. A…

Students in an introductory biology course had laboratory sessions in one of two patterns: as one three-hour session per week, or as two one-and-one-half hour sessions, one after each lecture. Each of the twelve instructors involved taught one section using each pattern. The Nelson Biology Test, the Watson-Glaser Critical Thinking Appraisal, and a…

A group of introductory college biology students using microscopic slides was compared to another group viewing photographic transparencies in addition to the microscopic slides. Students taught without the supplementary aids performed significantly better on examination questions dealing with the laboratory portion of the course. This unexpected…

The Australian Science Education Project is producing materials designed for use in grades 7-10 of Australian schools. This is the first trial version of a unit investigating microbial action. One of the student booklets contains instructions for the activities demonstrating food decay which all students are expected to complete. The other student…

The Australian Science Education Project is producing material designed for use in grades 7-10 of Australian schools. This is the first trial version of a unit providing instruction in microscopy. Illustrations of each step in setting up, focusing, preparation of mounts, microscopic measurement, and cleaning and packing the microscope are included…

Care and maintenance of snails are described. (BB)

Four examples are given of spectra of organophosphorus compounds which show students how the effects of phosphorus are delt with in nmr spectroscopy. (BB)

This course presents the student with a performance approach to biology. Each technique is covered in standard lecture format and in guided, independent laboratories. Examinations and grading are competency-based and require knowledge of both the use and limitations of the techniques. (BB)

Two papers are reported on, one dealing with a course on inorganic reaction mechanisms for college seniors, and the other on the set-up necessary to provide students with an automatic potentiometric titration facility. (BB)

An alternative development of the quadratic formula via paper squares and rectangles is presented. A physical model is constructed to demonstrate the constant term needed to complete the square. (MP)

This article describes how a gas chromatograph may be used to determine the amount of carbon dioxide in exhaled air. The experiment has been used as part of a demonstration exercise at a local science fair and proved of interest to all age groups. (Author/BB)

Describes procedures to demonstrate oxidation and simultaneous equilibria involving insoluble salts. (SL)

Described are nine enzyme essays for distinguishing soil samples. Colorimetric methods are used to compare enzyme levels in soils from different sites. Each soil tested had its own spectrum of activity. Attention is drawn to applications of this technique in forensic science and in studies of soil fertility. (Author/AJ)