"This study examines the origins of geometry in and out of the intuitively given everyday lifeworlds of children in a second-grade mathematics class. These lifeworlds, though pre-geometric, are not without model objects that denote and come to anchor geometric idealities that they will understand at later points in their lives. Roth's analyses explain how geometry, an objective science, arises anew from the pre-scientific but nevertheless methodic...

"Leading phonics expert Wiley Blevins has updated his best-selling classic to include the latest in phonics instruction and the science of reading, as well as current research on handwriting and on phonemic awareness. This revised edition also offers ideas for maximizing your scope and sequence, practical tips for creating sound walls, a decodable text routine for building comprehension, strategies for differentiating during whole-group lessons while...

"Climate change is occurring, is very likely caused by human activities, and poses significant risks for a broad range of human and natural systems. Each additional ton of greenhouse gases emitted commits us to further change and greater risks. In the judgment of the Committee on America's Climate Choices, the environmental, economic, and humanitarian risks of climate change indicate a pressing need for substantial action to limit the magnitude of...