Modular Invariant Theory

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Debbie Diller

If you've ever questioned how to make math stations work, you'll find this photo-filled, idea-packed resource invaluable. This book extends Debbie Diller's best-selling work on literacy work stations and classroom design to the field of mathematics. In Math Work Stations you'll find ideas to help children develop conceptual understanding and skills, use math vocabulary as they talk about their mathematical thinking, and connect big ideas to meaningful independent exploration and practice. This book details how to set up, manage, and keep math stations going throughout the year. There's even a chapter devoted solely to organizing and using math manipulatives. Each chapter includes: key concepts based on NCTM and state math standards; math vocabulary resources and literature links; suggested materials to include at each station for the corresponding math content strand; ideas for modeling, troubleshooting, differentiating, and assessment; and reflection questions for professional development. Throughout the book, Debbie has included hundreds of color photos showing math work stations in action from a variety of classrooms in which she has worked. Charts, reproducible forms, and math work stations icons are included to provide everything you'll need to get started with stations in your classroom right away. - See more at:

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Eystein S. Husebye, Anton M. Dainty

An international treaty banning the testing of any nuclear device in any environment - a comprehensive test ban treaty (CTBT) - has been on the political agenda for nearly 40 years. Objections to a CTBT have been political, technical, or a combination of both. However, the possibilities seem better after the end of the Cold War. In the prevailing, cooperative disarmament climate a CTBT appears likely to be approved by most countries in 1996. Hence the great current interest in monitoring technologies and capabilities. Such issues are comprehensively addressed here, a preamble being devoted to the political developments and setbacks over the past 40 years. Since seismic means are considered the dominant monitoring element, they are explored in detail. Contributions cover network deployments, advanced signal processing, wave propagation in heterogeneous media, and seismic source representations, and a variety of techniques for source classification (including neural networks). Complementary monitoring techniques, such as hydroacoustics, radionuclides and infrasound, are also summarised. The IAEA operation for monitoring compliance with the Non-Proliferation Treaty is also presented. The book also includes eyewitness accounts of the Soviet 50 Mt megabomb development and test, as well as the efforts made by the state to monitor the nuclear test programmes of the western powers. Includes some 33 articles written by distinguished scientists active in CTBT monitoring research for decades.

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Charles E. Finsley

"Go behind the scenes and into the vaults of Texas dinosaur study. Through photos and narrative, many of Texas' most dedicated scientists show you actual specimens of native and nonnative dinosaur material. This book features photos of the fossilized bones of Texas dinosaurs and the dinosaur exhibits in every major museum in Texas. Detailed maps show what Texas was like during the dinosaur age.". "Doris Tischler's watercolors create a gallery of 23 native Texas dinosaurs. These colorful portraits allow you to observe the dinosaurs and get an idea of their shapes and sizes - from weighing barely 50 pounds to an astounding 50 TONS. Respected paleontologists, including Dr. Wann Langston, world-renown vertebrate paleontologist from the University of Texas, provide practiced commentaries on their subjects of expertise."--BOOK JACKET.

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Gavin Young

It was the legendary traveller Wilfred Thesiger who first introduced Gavin Young to the Marshes of Iraq. Since then Young has been entranced by both the beauty of the Marshes and by the Marsh Arabs who inhabit them, a people whose lifestyle is almost unchanged from that of their predecessors, the Ancient Sumerians. On his return to the Marshes some years later Gavin Young found that the twentieth-century had rudely intruded on this lifestyle and that war was threatening to make the Marsh Arabs existence extinct. Return to the Marshes, first published in 1977, is at once a moving tribute to a unique way of life as well as a love story to a place and its people. 'A superbly written essay which combines warmth of personal tone, a good deal of easy historical scholarship and a talent for vivid description rarely found outside good fiction.' Jonathan Raban, Sunday Times