Biology textbooks tend to assert the correctness of evolutionary concepts but mention very little of the evidence that supports them. This gives the impression that evolutionary theory is poorly supported, which discourages acceptance of the theory. A case in point is the age of the Earth. Biology textbooks usually mention that the planet is…

In spite of the importance of geological time in evolutionary biology, misconceptions about historical events in the history of life on Earth are common. Glenn (1990) has documented a decline from 1960 to 1989 in the amount of space devoted to the history of life in high school earth science textbooks, but we are aware of no similar study in…

In the past, contributions by women have been largely overlooked in U.S. science instruction. However, the move toward standards-based integration of appropriate history of science topics supports bringing female scientists' viewpoints to the classroom--offering a range of perspectives on scientific advances. The authors' historical research in…

Describes the major technological hurdles that scientists and engineers must overcome if humans are to make extended explorations of space in manned vehicles. (ZWH)

Describes scientific research on an Earthwatch expedition to study Arenal, one of the world's most active volcanoes, in north central Costa Rica. The purpose of the two-week project was to monitor and understand the past and ongoing development of a small, geologically young, highly active stratovolcano in a tropical, high-rainfall environment.…

Describes a soil lab that can be performed with a minimum of equipment and time, utilizing a lawn, field, or woodlot. Students dig a 1-meter-deep pit and observe the litter and humus layers where most microbial and fungal decomposition occurs. Describes comparing different locations by pH level and concentration of potassium, phosphorous, and…

Describes major desert aquatic habitats, including descriptions of environmental conditions characteristic of these areas and the adaptations of desert aquatic organisms to them. (CS)

The effects of human activity on stratospheric zone and several consequences to humans and their environment are discussed. (Author/SA)

Presents the philosophical, methodological, and conceptual contributions of earth science to the biology curriculum. Explores how the curriculum can build on these contributions to achieve greater relevance for students as a basis for decision making. Gives examples of computer networks that accomplish that goal. (11 references) (MDH)

Makes comparisons between the Earth and other planets to suggest a possible vehicle for predicting the effects of human-made or natural disasters on our Earth. Also included are brief discussions of the following topics: (1) the atmosphere and greenhouse effect; (2) alterations of the biosphere; (3) climate and climatic change; (4) the water…

Describes a fieldwork project in archaeology for teachers. Discusses one teacher's involvement in the Nevada program including field techniques and the development of a classroom lesson. Gives an address for obtaining information about the program. (CW)

Inexpensive metal probe meters that are sold by garden stores can be evaluated by students for their accuracy in measuring soil pH, moisture, fertility, and salinity. The author concludes that the meters are inaccurate and cannot be calibrated in standard units. However, the student evaluations are useful in learning the methods of soil analysis…

Describes two successful approaches (peer teaching and role playing) to teaching students about their environment. Also included are ideas for additional classroom assignments. (ZWH)

Defends the need for field trips, citing studies that show improved methodology and process knowledge. Also stresses the need for planning to ensure success of such trips and to defend them on a cost basis. Includes two field studies: a north/south slope comparison, and fossil record study. (JM)