A static method of measuring the surface tension of a liquid is presented. Jaeger's method is modified by replacing the pressure source with a variable pressure head. By using this method, stationary air bubbles are obtained thus resulting in controllable external parameters. (Author/KR)

Using a physical picture, an expression for the maximum possible transverse velocity and orientation required for that by a linear emitter in special theory of relativity has been derived. A differential calculus method is also used to derive the expression. (Author/KR)

Rapid-cycling brassicas can be used in the classroom to teach concepts such as plant growth, tropisms, floral reproduction, pollination, embryonic development, and plant genetics. Directions on how to obtain them for classroom use and how they may be grown are included. Practical physiology and genetics exercises are listed. (KR)

Winning essays written for the "Winning Words" international science competition are presented. A description of the competition, a summary of subjects chosen by grade level, a summary of entries, schools participating, and prizes are included. (KR)

Discusses how teachers can incorporate a science poetry contest into the curriculum to encourage students to use poetry to express their thoughts about the natural world. (BB)

Describes how to organize "SMATH TECH--For Kids Only!" a two-day convention for elementary students focusing on science, mathematics, and technology. The convention costs about $4,000 for 300 students to attend. (PR)

Informs biology teachers about lead contamination by providing an overview of the subject. Emphasis is placed on the sources of lead exposure, followed by ways in which a discussion of lead could be incorporated into the biology curriculum. (ZWH)

Using graphs and diagrams, the authors describe a simple fermentation chamber and provide key experiments that can be used in the classroom to give students meaningful insight into metabolic processes. (ZWH)

Uses members of the Cruciferae family such as radishes (Sp. Raphanus), to describe a process termed allelopathy by which a plant uses a chemical compound that escapes into the environment to harm another plant. Tips are provided for easy use in the classroom. (ZWH)

This article contains a foldout entitled Natural Gas and the Environment for use in helping students become more aware of the relationships that exist between humans and the environment. Suggestions for classroom integration of this subject into your curriculum are also provided. (ZWH)

Suggests the use of guest speakers in the science classroom to improve student learning and community-school relations. Shares strategies to effectively utilize speakers, provides a model letter of invitation to the speakers, and identifies exemplary speaker subjects and highlights. (MDH)

Presents an overview of microorganisms contained in soil. Describes an activity where students use hand lenses or microscopes to find fungi in soil. (PR)

Describes the use of a weekly blackboard session as a way to improve instruction in an organic chemistry lecture. The instructor writes problems on the board and either alone or in groups, students write the answers on the board. Later, they explain their solutions to the class. (PR)

Describes types of meteors and micrometeorites that enter the Earth's atmosphere. Presents an activity where students collect micrometeorites with a strip of tape in an undisturbed outdoor area. After 24 hours, they examine the tape by sandwiching it between 2 glass slides and view through a microscope at 100X. (PR)

Describes the use and benefits of prosection--a dissection performed in advance and used by "nondissecting" students for detailed observation and study--in undergraduate laboratories. (PR)