Activities designed to teach children about solar distance and size are presented. These include a classroom-sized model, an outdoor model, a read-aloud activity, and follow-up activities. Available resource materials in print and on film are listed. (CW)

Described are the apparatus and procedures needed for a demonstration of the measurement of the electrical resistance of metals as a function of temperature using a microcomputer interface. Discussed are materials, apparatus construction, and experimental results. (CW)

Described are the apparatus and procedures needed for a demonstration of a determination of the polarity of charges carried by individual ground flashes of lightning. Discussed are materials, apparatus construction, and experimental results. (CW)

Described are the apparatus and procedures needed for this correction technique using a microcomputer interface. Discussed are materials, apparatus construction, and experimental results. (CW)

Interactive science and technology centers are described that emphasize "hands-on" science. Examined are the outreach programs offered by many centers which include traveling exhibitions and published resource materials. Examples of follow-up activities to a center visit are included. (KR)

Examined is the contribution that hands-on, interactive centers can make to science education. The characteristics of informal and formal learning are compared and discussed. (KR)

Advocated is the use of interactive centers to supplement existing classroom laboratory experiences. Activities found in the center and modified classroom versions are described. The problems that arise when primary students meet sophisticated exhibits is discussed. (KR)

The impact of enhanced observation or enhanced prediction on scientific reasoning about heat energy and temperature problems was investigated. Instruction was successful in improving prediction and observation skills in the microcomputer-based laboratory environment. (CW)

Suggested is a methodology for teaching and assessing group problem-solving with secondary school pupils. The results of a study conducted on this method are presented. The problem-solving approach used and operational definitions for assessment are listed. Scenarios for problem-solving activities are included. (CW)

Described are the camps, competitions, and tests of the U.S. National Chemistry Olympiad. International competition, local exams, participating high schools, and national exams are highlighted. A summary of test results from the 1988 national examinations are presented. (CW)

Presented are reviews of two computer software packages for Apple II computers; "Organic Spectroscopy," and "Videodisc Display Program" for use with "The Periodic Table Videodisc." A sample spectrograph from "Organic Spectroscopy" is included. (CW)

Discusses a microcomputer-based laboratory (MBL) study (n=75) which uses multiple temperature gathering devices (mercury thermometer, digital thermometer, and computer probe) and graphing methods (hand graphs, delayed computer graphs, and real-time graphs). Reports that MBL real-time graphing provides significant increases in graphing skills. (MVL)

Discusses changes in chemistry education from 1983 to 1988. Describes the past and present situation of chemistry education. Reports on current teacher education programs. (MVL)

Describes the development and implementation of National Science Foundation (NSF) funded workshops for inservice secondary school biology teachers. Suggests a format for inservice teacher education projects generalized from the experience of teacher activities with respect to human genetics and bioethical decision-making. (YP)

Discusses the use of local networks and integrated learning systems in delivering instruction. Presents a summary of projects initiated by the states of Maryland, Florida, Michigan, Minnesota, and North Carolina. Notes that although network software is gaining popularity, most software is still for the individual user. (MVL)