Describes the theory behind the workings of the Hubble Space Telescope, the spherical aberration in the primary mirror that caused a reduction in image quality, and the corrective device that compensated for the error. (JRH)

Presents a rock classification scheme for use by beginning students. The scheme is based on rock textures (glassy, crystalline, clastic, and organic framework) and observable structures (vesicles and graded bedding). Discusses problems in other rock classification schemes which may produce confusion, misidentification, and anxiety. (10 references)…

Describes seasonal activities that can be used to study the sedimentation process. (ZWH)

Uses a talk show activity for a final assessment tool for students to debate about the ozone hole. Students are assessed on five areas: (1) cooperative learning; (2) the written component; (3) content; (4) self-evaluation; and (5) peer evaluation. (SAH)

Discusses the five upcoming shuttle missions, two Russian missions to the International Space Station, a scheduled visit to the Hubble Space Telescope for maintenance, and other events in the solar system. Includes a list of monthly events. (YDS)

Summertime in Alaska offers students many options for science projects. The brief season offers an opportunity to explore plant life, wildlife, environmental phenomena, and various other science and social science topics. Most of the research conducted at the camp could not be done during students' regular academic year due to Alaska's harsh…

In this article, the authors describe how pupils can benefit from some unusual and exciting free resources of geomatics.org.uk. Geomatics.org.uk is a project that provides free resources to support teaching and learning in a variety of subjects including maths and geography, often in a cross-curricular way. Via the project website, it is possible,…

One of a series of general interest publications on science topics, the booklet provides those interested in geologic time with an introduction to the subject. Separate sections discuss the relative time scale, major divisions in geologic time, index fossils used as guides for telling the age of rocks, the atomic scale, and the age of the earth.…

Presents three lapidary activities which have been developed to teach enrichment courses to adults and young people. Described are activities and materials for polishing and shaping rocks. (EB)

Describes the objectives of the Association of Geoscientists for International Development, some of which are: to evolve guidelines for training earth science personnel for developing countries, to develop criteria for selecting personnel for international service and to encourage communication between agencies interested in international aid in…

This book represents the final report of the planning phase in the development of an instructional system to be implemented at Cubberley High School in the Palo Alto Unified School District. The purpose of this project is to develop a pilot science learning system in the earth/life sciences. The systems analysis approach was utilized in an attempt…

This historical study traces in detail the gradual change in point of view in nineteenth century geology textbooks from religious fundamentalism to secularism. Scientific progress is identified as a major factor in bringing about this change. In the early decades of the nineteenth century authors stressed that geology was in accord with Christian…