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Sponsored by the American Museum of Natural History, this illustrated history of the Inkas and their predecessors offers a fresh appraisal of a remarkable civilization.

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From a fresh new voice comes a tween novel about fitting in, growing up, and coming to terms with change.

Brooke and Madeline have been best friends since they first met. But as each girl enters middle school, suddenly their friendship isn't looking so solid. And when cracks in their relationship become chasms, they must decide if there's anything worth salvaging.

A key element in evaluation, performance measurement, is the subject of this volume, a substantially revised version of How to Measure Achievement of the original Kit. A new feature is the discussion of current issues in performance testing, including those related to legal challenges and test validity. The evaluator's role in performance measurement is discussed, as is the suitability of existing performance measures. Where no appropriate tes...