From Harry Turtledove, bestselling author and critically acclaimed master of the short story, comes a classic collection of science fiction tales and what-if scenarios. In narratives ranging from fantastic to oddly familiar to eerily prescient, this compelling volume illustrates Turtledove's literary skill and unbridled imagination. FORTY, COUNTING DOWN: With the help of his time-travel software, computer genius Justin Kloster returns to the past to stop himself from making a terrible mistake - but all actions have their consequences. THE MALTESE ELEPHANT: A legendary detective finds himself in grave danger when a noir masterpiece takes a stunning new twist. GODDESS FOR A DAY: Taking a page from history, a young girl dares to challenge the gods - and is richly rewarded for her efforts. DECONSTRUCTION GANG: Mired in unemployment and despair, an academic finds happiness and intellectual fulfillment in a most unexpected place. TWENTY-ONE, COUNTING UP: Justin Kloster's college life and romantic dreams are rudely interrupted - and irreversibly disrupted - when forty-year-old Justin arrives from the future to save himself from himself. Plus twelve more thrilling, unforgettable tales of wonder!

For some time now, the study of cognitive development has been far and away the most active discipline within developmental psychology. Although there would be much disagreement as to the exact proportion of papers published in developmen tal journals that could be considered cognitive, 50% seems like a conservative estimate. Hence, a series of scholarly books to be devoted to work in cognitive development is especially appropriate at this time. The Springer Series in Cognitive Development contains two basic types of books, namely, edited collections of original chapters by several authors, and original volumes written by one author or a small group of authors. The flagship for the Springer Series will be a serial publication of the "advances" type, carrying the subtitle Progress in Cognitive Development Research. Each volume in the Progress sequence will be strongly thematic, in that it will be limited to some well-defined domain of cognitive-developmental research (e. g. , logical and mathematical de velopment, semantic development). All Progress volumes will be edited collec tions. Editors of such collections, upon consultation with the Series Editor, may elect to have their books published either as contributions to the Progress sequence or as separate volumes. All books written by one author or a small group of authors will be published as separate volumes within the series. A fairly broad definition of cognitive development is being used in the selection of books for this series.

Rabbits from one to ten get ready to help clean up.

The book lets teachers identify where their students are in terms of number skills, and sets out a strategy for developing their knowledge. The authors show how to advance children's learning across five stages of early arithmetical learning - emergent, perceptual, figurative, initial number, and facile number. This provides for increasingly sophisticated number strategies across addition, subtraction, multiplication and division, as well as developing children's number word and numeral knowledge, and their ability to structure number and have grouping strategies. The approach used nine guiding principles for teaching. Each chapter has clearly defined teaching procedures which show how to take the children onto the next more sophisticated stage. The teaching procedures are organized into key teaching topics, and each includes: o a clearly defined purpose o detailed instructions, activities, learning tasks and reinforcing games o lists of responses which children may make o application in whole class, small group and individualised settings o a link to the Learning Framework in Number (see Early Numeracy- second edition, 2005) o how the guiding principles for teaching can be used to allow teachers to evaluate and reflect upon their practice Primary practitioners in Australia, the United States, the United Kingdom and Canada have tested the teaching procedures which can be used in conjunction with each country's numeracy strategy. Primary teachers, especially of the early years, mathematics co-ordinators, heads of school, mathematics advisers, special educationalists, learning support personnel, teacher assistants, lecturers in initial teacher training and educational psychologists will all find this book invaluable.

This easy-to-understand book illustrates practical applications using circuits the user will face in the design engineer field. Electronics Workbench CD-ROM included contains Electronics Workbench Version 5 and EWB Multisim Version 6 circuit data files, as well as solutions to the in-text Altera and Xilinx examples-providing users with additional reinforcement and feedback concerning exercises and problems. Programmable Logic Devices (CPLDs); Timing waveforms; MultiSIM simulations of digital circuit applications; Computer generated Boolean logic reductions; Section on event counting with optical switches and Hall-effect switches; Section on connecting multiple I/O to CPLDs; Stepper motors and controller ICs; Section on implementing state machines using VHDL; and ADC and DAC simulations. For design engineers.

The book presents nine guiding principles for advancing children's early number skills and offers clear strategies more advanced instruction in addition, subtraction, multiplication, and division .