Enumerates some of the research findings in geochemistry during the last year, including X-ray analysis of the Mars surface, trace analysis of fresh and esterarine waters, and analysis of marine sedements. (MLH)

Describes recent developments in remote-sensing techniques and the use of remotely acquired data by earth scientists. (MLH)

Describes an activity that involves determining local solar time of the various parts of a total lunar eclipse--beginning of the dark umbral phase of eclipse, onset of totality, end of totality, and end of dark umbral phase of eclipse--and comparing to the solar time of the events at Greenwich to calculate the longitude at the place of…

Details of the landscape of the planet Venus as revealed by the Magellan spacecraft are discussed and illustrated. Advances beyond previous space probes are demonstrated. Details of the program are described. Additional work from this project is proposed. (CW)

Discusses how to use materials that can be found at garage sales in science classrooms. (YDS)

Introduces Wilson A. Bentley, who studied precipitation. Discusses Bentley's method for measuring the number, size, and shape of raindrops and determining the rate of rainfall. Lists required materials and explains the procedure for students and teachers. Provides scientific background on condensation and precipitation. (YDS)

Discusses the dynamic forces shaping our world as well as ideas for better student understanding of scientific theories. (YDS)

This article describes a project in which eighth graders at East Side Middle School in New York City used an interactive multimedia program called "Pollution Solution" in a science unit on environmental pollution. Students assumed the role of environmental consultants working at fictional corporations which were being investigated for…

As time has progressed, the role of applied mathematics has become increasingly important. Indeed there are now more students enrolled in applied mathematics courses in senior high schools and colleges than in pure mathematics. Such courses become more relevant both to the student and to future employers, if the same constants and equations that…

Ensuring that students understand the basis behind their geography/science courses is an essential part of their education. This article looks at an inexpensive and rigorous way of teaching students how to develop the needed data for remote sensing work. The procedure shows instructors how to build a system to teach students the process of…

Within this huge national park (over two million acres spread across Wyoming, Montana, and Idaho) are steaming geysers, hot springs, bubbling mudpots, and fumaroles, or steam vents. Drives on the main roads of Yellowstone take tourists through the major hot attractions, which also include Norris Geyser Basin, Upper and Lower Geyser Basin, West…

The role of greenhouse gases in our atmosphere is the subject of considerable discussion and debate. Global warming is well-documented, as is the continually increasing amount of greenhouse gases that human activity puts in the air. Is there a relationship between the two? The simple experiment described in this paper provides a good demonstration…

During the last two decades of colonial rule, a wide gulf existed between policy and practice in Hong Kong's English-medium secondary schools: while English was the medium of textbooks, assignments and examinations, Cantonese and Cantonese-English mixed code were the dominant media of classroom communication. Although mixed-mode instruction was…

This study examined the impact of an intervention designed to promote inquiry-based instruction among early childhood/elementary preservice teachers in Earth science. Preservice teachers participated in training sessions and community-based internships to deepen Earth science content knowledge and develop inquiry-based practices. Analyses of Earth…

An instructional unit incorporating some of the Global Learning and Observation to Benefit the Environment (GLOBE) hydrology protocols provides an excellent way to connect academic learning, scientific inquiry, multiple subjects, and the values required for concerned citizenship in a democracy. This article describes the GLOBE hydrology protocols…