Geography instructional materials for standards-based education
Educational programme ; Professional training ; Teaching material ; Teaching of geography ; United States of America
Description of three development projects on geography instructional materials (GIGI, ARGUS and GEOLinks) that support the new geography standards now much discussed in the USA. - (DWG)
Morphological characteristics of gully networks and their relationship to host materials, Baringo District, Kenya in Soil erosion and host materials in Africa.
This paper looks at the morphological characteristics of gully networks developed within three contrasting host materials (one of weathered bedrock, the other two are alluvial deposits) in the Baringo District of Kenya.
Mechanism for the instability of slopes composed of granular materials
The mechanism of instability of slopes composed of granular materials was examined through a tilting-box experiment using an assembly of aluminium rods and direct shear tests. Avalanching of granular materials is triggered by rotation of rods
at the slope surface. The force inducing the rotation was caused by the weight of the particles transmitted through contact points. Therefore, the mechanism of avalanching of granular materials was not comparable to the shear mechanism that has been considered
to be responsible for the instability of slopes made of granular materials.
Translation and development theory in geographic education : a model for the genesis and production of geography instructional materials in a competitive funded grant environment
Development ; Pedagogy ; Primary education ; Secondary education ; Teaching material ; Teaching of geography
Pedagogical essay on the process involved in the production of materials for use in geography classes at primary and secondary levels. - (DWG)
Educational programme ; Geographical association ; School curriculum ; Teaching material ; Teaching of geography ; United States of America
Information on the GIGI and ARGUS projects, the American Geographical society Around the World Program, Geolinks and the Key to the National Geography Standards. These source materials are meant to benefit classroom teachers of geography in the USA
A. considers how we obtain and use visual materials and how they structure our narratives. She notes that the collection of visual materials is often difficult and uncontextualized with notes or other written information. Visual materials used
by historical geographers are usually not interpreted for their political representation. Finally, she urges us to consider how the visual material might reflect underlying precepts of colonialism, masculanism, and racism. - (SLD)
On the basis of exploratory soil surveys and joint field work by Dutch and Vietnamese soil scientists during February 1984 and September 1985, the different kinds of sulfidic materials in the western Mekong delta are described and their distribution
is presented in the form of a generalized map. Two main kinds of sulfidic materials have been recognized.
The characteristics of, and the sources of the soil materials for, pottery groups manufactured in 3 ancient settlements of early Roman Galilee were studied by micromorphological techniques. The micromorphological comparison of the pottery groups
and soil materials shows that 2 main factors influenced the raw-material procurement strategies of the potters of these settlements : the proximity of the soil material to the potters' settlement, and the suitability of the soil material for pottery
Effect of grain diameter and packing condition on the avalanching depth on a slope composed of dry granular materials
To examine the depth of avalanching taking place on a slope at a critical angle of repose, tilting tests were performed in the laboratory using slopes made of granular materials such as gravels and glass beads. The AA. conclude that the avalanche
depth on slopes made of granular materials is determined by the diameter of the slope materials and by their packing state.
The depth of avalanching on a slope composed of granular materials : laboratory tilting tests
The purpose of this study is to examine the mode and depth of an avalanche on a slope composed of cohesive granular materials in comparison with that composed of non-cohesive materials. Results and conclusions of the laboratory tilting tests
Soil parent materials in the Moshaysk district, Russia
Soil profiles developed on moraines of the penultimate glaciation on the Russian Plain have formed from redistributed material, mainly sand, derived from upslope. This material consists of layers, some of which also contain, or may even be dominated
by, loess. From field measurements, grain size data and heavy mineral analyses, the AA. show how the different soil parent materials can be distinguished and whether typical parent material sequences occur in the Moshaysk region.