Suggestions are given for safety precautions in the secondary school science laboratory. Emphasis is placed on fire safety and identification of particularly hazardous situations. (SA)

Detailed are the origins, development, and implementation of the Crustal Evolution Education Project (CEEP). This group has produced, for use in earth science and other classes in grades 8-10, a series of instructional modules based on current scientific research in the composition, history, and processes of the earth's crust. (BT)

An audio-autotutorial program for high school students is described which utilizes many appropriate audiovisual materials and serves as an alternative to the traditional lecture-discussion approach. (SA)

Data were obtained from the 1987-1991 Longitudinal Study of American Youth for this study of secondary students. Beyond the expected effects of gender, socioeconomic status, reading ability, and prior achievement, homework effects were found for mathematics achievement; and homework and assessment format effects were found for science achievement.…

Discussion of dynamic modeling focuses on the development of a new modeling tool called Model-It which provides intentionally designed scaffolding for learners, enabling them to build and test dynamic models of complex systems using object-oriented and qualitative techniques. Classroom testing with high school students is described. (Author/LRW)

Presents an overview of claims and counterclaims in the debate over the kinds of writing tasks that enable secondary students to learn about science and demonstrate scientific understanding. Constructivist views on language and learning are examined, and a model is proposed to guide writing for learning in secondary science. (SM)

Examines the induction of two middle school science teachers as partners in a job sharing arrangement in lieu of student teaching, describing how they worked together and supported each other's attempts to implement student-centered practices and likening their mutual support to a marriage partnerships. The two teachers mentored each other through…

Reports a study that investigated gender equity in science education based on a random national sample of over 12,000 ninth graders in five rural and urban Chinese provinces. Data analysis found significant gender differences in science achievement in all five provinces, with males receiving higher scores. (SM)

Described is an activity in which students calculate constant velocity using a tape cassette player. The objectives, procedures, graphing directions, and formulas and values needed for the calculations are included. (KR)

Discussed is the importance or unimportance of including visuals and illustrations in science textbooks. Characteristics of visuals, misconceptions, individual student differences, publishers views, and recommendations to science teachers when choosing science texts are included. (KR)

Described is a way to modify the classroom environment so that females and minorities are more encouraged to participate in activities. The use of cooperative skills are emphasized such as active listening and checking for understanding. (KR)

Described is a practical examination that investigated the process skills of ninth grade students. Six hands-on test items are described. Included are the process test categories, the test room setup, and the major findings. (KR)

Described are demonstrations provided for secondary school students designed to illustrate the fun and wonder of chemistry and learning by experimentation. A list of the contents for the videotapes and suggestions for discussions using the videotapes are provided. (CW)

The construction and use of an instrument to monitor ultraviolet radiation from the sun are discussed. A diagram of the ultraviolet-B radiometer which is connected to a digital voltmeter is provided. (CW)

Fourteen astronomy activities are presented including classroom procedures and questions. Topics include different investigations of the moon, planets, stars, sunsets, light pollution, and rainbows and halos. Additional information on measurements used for observations in astronomy, and rainbow characteristics is included. (CW)