It has a reputation as a dry and difficult subject, a glorified form of geometry complicated by tedious computation. In this book, Eli Maor draws on his remarkable talents as a guide to the world of numbers to dispel that view. Rejecting the usual arid descriptions of sine, cosine, and their trigonometric relatives, he brings the subject to life in a compelling blend of history, biography, and mathematics. He presents both a survey of the main elements of trigonometry and a unique account of its vital contribution to science and social development. Woven together in a tapestry of entertaining stories, scientific curiosities, and educational insights, the book more than lives up to the title Trigonometric Delights.Maor, whose previous books have demystified the concept of infinity and the unusual number "e," begins by examining the "proto-trigonometry" of the Egyptian pyramid builders. He shows how Greek astronomers developed the first true trigonometry. He traces the slow emergence of modern, analytical trigonometry, recounting its colorful origins in Renaissance Europe's quest for more accurate artillery, more precise clocks, and more pleasing musical instruments. Along the way, we see trigonometry at work in, for example, the struggle of the famous mapmaker Gerardus Mercator to represent the curved earth on a flat sheet of paper; we see how M. C. Escher used geometric progressions in his art; and we learn how the toy Spirograph uses epicycles and hypocycles.Maor also sketches the lives of some of the intriguing figures who have shaped four thousand years of trigonometric history. We meet, for instance, the Renaissance scholar Regiomontanus, who is rumored to have been poisoned for insulting a colleague, and Maria Agnesi, an eighteenth-century Italian genius who gave up mathematics to work with the poor--but not before she investigated a special curve that, due to mistranslation, bears the unfortunate name "the witch of Agnesi." The book is richly illustrated, including rare prints from the author's own collection. Trigonometric Delights will change forever our view of a once dreaded subject.

    It makes a lovely gift from parent to child and a perfect learning companion to help all school children. It is a treasure trove of easy methods to take important information from the back of the mind to the tip of children's tongues.

    Using easy instructions and simple objects such as beans, blocks, pennies, buttons, and string, parents and kids solve problems together. FAMILY MATH is a rich resource of math curriculum including number and estimation, logical thinking, probability and statistics, geometry, measurement, and calculators. The stimulating games, puzzles, and projects entice kids in playful ways to master math concepts. Because this book reinforces the basic school curriculum, it is also a must for teachers. The book has a step-by-step description of how to organize a FAMILY MATH class in your community. For families with children five to twelve years old. Grades K-8. 318 pp

    Do you dream about increased student engagement and more effective classroom management? How about reducing teacher stress and overwhelm? Or leaving campus at a reasonable hour without dragging a cart full of lesson planning and papers to grade in tow?If the answer to these questions is “Yes!”  then this book is for YOU!Based on current research in positive psychology and more than 15 years “real world” experience in the classroom, this book provides a practical roadmap to reduce stress, improve student behavior and be happier in your classroom and your life.These 10 simple positive mindset habits train you to flex your “happy muscle” and easily: Eliminate teacher overwhelm and stress Leave school every day energized and fulfilled Connect with students in a way that turns every group of kinds into a “dream class” Rediscover the passion and excitement that made you want to become a teacher A quick read in a conversational tone, this book will put a smile back on your face and laughter back in your classroom – two critical elements for teacher fulfillment and student success.*** For a LIMITED TIME your purchase INCLUDES a free download of the 30 page Companion Workbook and a six-week version of the Positive Mindset Journal for Teachers ***

    Packed with student examples, this detailed guide explains the unique features that make interactive notebooks more effective tools than conventional notebooks for science classrooms. This resource:Describes the nuts and bolts of implementing interactive notebooks, including execution, time management, and grading Uses the 5E Learning Cycle as the framework for science instruction Emphasizes the importance of writing in science and provides strategies for modeling effective writing Explores strategies to encourage collaborative student inquiry and foster whole-class discussions

    Whether it is a visualization of the Catalan numbers or an explanation of how the Fibonacci numbers occur in nature, there is something in here to delight everyone. The diagrams and pictures, many of which are in color, make this book particularly appealing and fun. A few of the discussions may be confusing to those who are not adept mathematicians; those who are may be irked that certain facts are mentioned without an accompanying proof. Nonetheless, The Book of Numbers will succeed in infecting any reader with an enthusiasm for numbers.

    Back to basics guide to improve your knowledge of and practice of photography.Topics include camera and lens types, lighting, exposure, composition and image editing.

    Written by the well-known mathematics teacher consultant, this volume's collection of over 200 clearly illustrated mathematical ideas, concepts, puzzles, and games shows where they turn up in the real world. You'll find out what a googol is, visit hotel infinity, read a thorny logic problem that was stumping them back in the 8th century.THE JOY OF MATHEMATICS is designed to be opened at random...it's mini essays are self-contained providing the reader with an enjoyable way to explore and experience mathematics at its best.

    From man's first act of counting to higher mathematics, from the smallest living creature to the dazzling reaches of outer space, Asimov is a master at "explaining complex material better than any other living person." (The New York Times) You'll learn: HOW to make a trillion seem small; WHY imaginary numbers are real; THE real size of the universe - in photons; WHY the zero isn't "good for nothing;" AND many other marvelous discoveries, in ASIMOV ON NUMBERS.