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279 results for "gerd"
Drawings from Angola: Living Mathematics By Paulus Gerdes
eBook (PDF): $4.95
Color eBook edition of award winning children's book. For children from age 8 to 14. “Drawings from Angola” presents an introduction to an African story telling tradition. The tales are... More > illustrated with marvelous drawings made in the sand. The book tells the stories of the stork and the leopard, the hunter and the dog, the rooster and the fox, and others. It explains how to execute the drawings. The reader is invited to draw tortoises, antelopes, lions, and other animals. The activities proposed throughout the book invite the reader to experiment and to explore the ‘rhythm’ and symmetry of the illustrations. Surprising results will be playfully obtained such as in arithmetic, a way to calculate quickly the sum of sequence of odd numbers. Children will live the beautiful mathematics of the Angolan sand drawings. Translation by Dr. Arthur B. Powell (Rutgers university). Answers to the activities are provided.The book can be used both in classrooms and at home. (Book also available in print)< Less
Disegni africani dall’Angola per vivere la matematica By Paulus Gerdes
eBook (PDF): $4.95
eBook edition in color of the Italian version of book for children. Dalla presentazione di Bruno D’Amore: "Dedicato ai giovani dagli 8 anni in su, Disegni africani dall’Angola ci... More > introduce ad una tradizione africana legata al racconto di favole illustrate con meravigliosi disegni a linea continua tracciati nella sabbia. Il libro racconta le favole della cicogna ed il leopardo, del cacciatore ed il cane, del gallo ed il volpone, e molte altre tipiche della cultura Cokwe, diffusa in Angola ed in altri Paesi dell’Africa australe. Spiega come fare i disegni ed invita il lettore (la lettrice) a disegnare tartarughe, antilopi, leoni ed altri animali. Alcune attività proposte permettono di sperimentare ed esplorare il ‘ritmo’ e la simmetria delle illustrazioni. Giocando, si otterranno risultati matematici sorprendenti, come un sistema per calcolare rapidamente la somma di una sequenza di numeri dispari." Il libro contiene le risposte alle attività ed ai problemi proposti. Traduzione: Giovani Nicosia.< Less
More Puzzle Fun with BiLLies By paulus gerdes
Paperback: $11.95
Prints in 3-5 business days
Who of us does not like a pastime that can divert and educate at the same time? The puzzles in this book are accessible to teenagers and adults alike, and may be explored individually or in clubs,... More > either in leisure time, or at school. This book "More puzzle fun with biLLies" presents one hundred puzzles, which you can solve using all fourteen 'biLLies', the pieces of the game. For instance, you can make the happy puppet on the front cover using the fourteen 'biLLies'. You will be asked to make certain symmetrical patterns. Have fun with the intriguing and tantalizing 'biLLies'! (76 pp.)< Less
Puzzle Fun with BiLLies By paulus gerdes
Paperback: $11.95
Prints in 3-5 business days
Who of us does not like a pastime that can divert and educate at the same time? The puzzles in this book are accessible to teenagers and adults alike, and may be explored individually or in clubs,... More > either in leisure time, or at school. This book "More puzzle fun with biLLies" presents one hundred puzzles, which you can solve using all fourteen 'biLLies', the pieces of the game. For instance, you can make the happy puppet on the front cover using the fourteen 'biLLies'. You will be asked to make certain symmetrical patterns. Have fun with the intriguing and tantalizing 'biLLies'! (76 pp.)< Less
Puzzle Fun with BiLLies By paulus gerdes
eBook (PDF): $3.95
Who of us does not like a pastime that can divert and educate at the same time? The puzzles in this book are accessible to teenagers and adults alike, and may be explored individually or in clubs,... More > either in leisure time, or at school. This book "More puzzle fun with biLLies" presents one hundred puzzles, which you can solve using all fourteen 'biLLies', the pieces of the game. For instance, you can make the happy puppet on the front cover using the fourteen 'biLLies'. You will be asked to make certain symmetrical patterns. Have fun with the intriguing and tantalizing 'biLLies'! (76 pp.)< Less
More Puzzle Fun with BiLLies By paulus gerdes
eBook (PDF): $3.95
Who of us does not like a pastime that can divert and educate at the same time? The puzzles in this book are accessible to teenagers and adults alike, and may be explored individually or in clubs,... More > either in leisure time, or at school. This book "More puzzle fun with biLLies" presents one hundred puzzles, which you can solve using all fourteen 'biLLies', the pieces of the game. For instance, you can make the happy puppet on the front cover using the fourteen 'biLLies'. You will be asked to make certain symmetrical patterns. Have fun with the intriguing and tantalizing 'biLLies'! (76 pp.)< Less
Enjoy puzzling with biLLies By Paulus Gerdes
Paperback: $23.08
Prints in 3-5 business days
Who of us does not like a pastime that can divert and educate at the same time? The puzzles in this book are accessible to teenagers and adults alike. They may be explored individually or in clubs,... More > either during leisure time or at school. The book presents hundreds of puzzles, which you can solve using some, or all, of the fourteen ‘biLLies’, the pieces of the game. “Warming-up exercises” pave the way for the rest of the book. In the second part of the book you are invited to build sequences of rather similar patterns. In the third part you will discover an interesting secret that will allow you to understand why some puzzles are so difficult. You will also be asked to make certain symmetrical patterns. Each chapter presents activities and puzzles, followed by one or more rounds of questions, answers and solutions. The Appendix explains how the ‘biLLies’ were conceived. (252 pp.)< Less
Enjoy puzzling with biLLies (eBook) By Paulus Gerdes
eBook (PDF): $5.95
“Enjoy puzzling with biLLies” presents hundreds of puzzles that you can solve using some, or all, of the fourteen ‘biLLies’, the pieces of the game. “Warming-up... More > exercises” pave the way for the rest of the book. To solve the puzzles in this first part of the book, you will not always need all fourteen ‘biLLies’, but only some of them. In the second part of the book you are invited to build sequences of rather similar patterns, starting with a few ‘biLLies’ and then advancing until you construct them with thirteen, or even fourteen, ‘biLLies’. In the third part “Making patterns with the fourteen ‘biLLies’” you will discover an interesting secret that will allow you to understand why some puzzles are so difficult. You will also be asked to make certain symmetrical patterns. Each chapter presents activities and puzzles, followed by one or more rounds of questions, answers and solutions. The puzzles are accessible to teenagers and adults alike, and may be explored individually or in clubs (eBook, 254 pp.).< Less
The Bisos Game: Puzzles and Diversions (eBook) By Paulus Gerdes
eBook (PDF): $3.95
Who does not like a pastime that can divert and educate at the same time? More than 50 puzzles will be presented in this booklet. To solve the puzzles one needs some or all nine pieces of the game. ... More > We will call the pieces bisos. The puzzles involve making figures that display certain properties. For example, with the nine bisos one can form a hexagon (see the front cover). The bisos puzzles and games could be an individual pastime, but can also be used by teachers as activities in clubs or to deepen various concepts of the school curriculum like those of polygons and symmetries. The bisos puzzles and games are accessible to children and adults from six to one hundred years of age. Amuse yourself! (eBook, 74 pp.)< Less
Ethnogeometry: Awakening of Geometrical Thought in Early Culture (eBook) By Paulus Gerdes
eBook (PDF): $4.95
The book considers early geometrical thinking, both as embedded in various social activities surviving colonization in the life of the peoples of the “South,” and in early history.... More > Chapter 1 discusses briefly some standard views of the origin of geometrical concepts. Chapter 2 analyzes alternative views of geometry. Chapter 3 analyzes the emergence of a series of early geometrical concepts and relationships in socially important activities. Questions such as these are considered: "Where could the concept of a right angle have come from? Where did the idea of a regular hexagon arise?" Chapter 4 presents a series of hypotheses on the possible role of social activity in the development of geometry in ancient Mesopotamia and Egypt. The last chapter offers some general ideas on the awakening of geometrical thought based on the analysis in this book. The book contains a foreword by the late Dirk Struik (1894-2000). (Second edition, 220 pp.).< Less

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