What is understanding and how does it differ from knowledge? How can we determine the big ideas worth understanding? Why is understanding an important teaching goal, and how do we know when students have attained it? How can we create a rigorous and engaging curriculum that focuses on understanding and leads to improved student performance in today's high-stakes, standards-based environment? Authors Grant Wiggins and Jay McTighe answer these and many other questions in this second edition of Understanding by Design. Drawing on feedback from thousands of educators around the world who have used the UbD framework since its introduction in 1998, the authors have greatly revised and expanded their original work to guide educators across the K-16 spectrum in the design of curriculum, assessment, and instruction. With an improved UbD Template at its core, the book explains the rationale of backward design and explores in greater depth the meaning of such key ideas as essential questions and transfer tasks. Readers will learn why the familiar coverage- and activity-based approaches to curriculum design fall short, and how a focus on the six facets of understanding can enrich student learning. With an expanded array of practical strategies, tools, and examples from all subject areas, the book demonstrates how the research-based principles of Understanding by Design apply to district frameworks as well as to individual units of curriculum. Combining provocative ideas, thoughtful analysis, and tested approaches, this new edition of Understanding by Design offers teacher-designers a clear path to the creation of curriculum that ensures better learning and a more stimulating experience for students and teachers alike.

This document stipulates the type division, grading, marking, basic technical requirements, test methods of chemical protective clothing. This document applies to the chemical protective clothing required by employees in the workplace and emergency rescue work. This document does not apply to chemical protective clothing used in firefighting and other occasions. Note 1: This document does not specifically propose performance indicator requirements for personal protective equipment, such as gloves, protective boots/shoes, protective masks, view windows, safety glasses, breathing apparatus, unless the protective equipment is an integral part of the protective clothing and provides corresponding chemical protection properties. Note 2: The protection objects involved in this document include gaseous, liquid, solid chemical substances.

From acclaimed historian Lawrence Goldstone comes a thrilling narrative of courage, determination, and competition: the story of the intense rivalry that fueled the rise of American aviation. The feud between this nation’s great air pioneers, the Wright brothers and Glenn Curtiss, was a collision of unyielding and profoundly American personalities. On one side, a pair of tenacious siblings who together had solved the centuries-old riddle of powered, heavier-than-air flight. On the other, an audacious motorcycle racer whose innovative aircraft became synonymous in the public mind with death-defying stunts. For more than a decade, they battled each other in court, at air shows, and in the newspapers. The outcome of this contest of wills would shape the course of aviation history—and take a fearsome toll on the men involved. Birdmen sets the engrossing story of the Wrights’ war with Curtiss against the thrilling backdrop of the early years of manned flight, and is rich with period detail and larger-than-life personalities: Thomas Scott Baldwin, or “Cap’t Tom” as he styled himself, who invented the parachute and almost convinced the world that balloons were the future of aviation; John Moisant, the dapper daredevil who took to the skies after three failed attempts to overthrow the government of El Salvador, then quickly emerged as a celebrity flyer; and Harriet Quimby, the statuesque silent-film beauty who became the first woman to fly across the English Channel. And then there is Lincoln Beachey, perhaps the greatest aviator who ever lived, who dazzled crowds with an array of trademark twists and dives—and best embodied the romance with death that fueled so many of aviation’s earliest heroes. A dramatic story of unimaginable bravery in the air and brutal competition on the ground, Birdmen is at once a thrill ride through flight’s wild early years and a surprising look at the personal clash that fueled America’s race to the skies. Praise for Birdmen “A meticulously researched account of the first few hectic, tangled years of aviation and the curious characters who pursued it . . . a worthy companion to Richard Holmes’s marvelous history of ballooning, Falling Upwards.”—Time “The daredevil scientists and engineers who forged the field of aeronautics spring vividly to life in Lawrence Goldstone’s history.”—Nature “The history of the development of an integral part of the modern world and a fascinating portrayal of how a group of men and women achieved a dream that had captivated humanity for centuries.”—The Christian Science Monitor “Captivating and wonderfully presented . . . a fine book about these rival pioneers.”—The Wall Street Journal “[A] vivid story of invention, vendettas, derring-do, media hype and patent fights [with] modern resonance.”—Financial Times “A powerful story that contrasts soaring hopes with the anchors of ego and courtroom.”—Kirkus Reviews “A riveting narrative about the pioneering era of aeronautics in America and beyond . . . Goldstone raises questions of enduring importance regarding innovation and the indefinite exertion of control over ideas that go public.”—Publishers Weekly (starred review)