Brand new. We distribute directly for the publisher. The peoples of Africa south of the Sahara desert constitute a vibrant cultural mosaic, extremely rich in its diversity. Among
the peoples of the sub-Saharan region, interest in creating and exploring forms and shapes has blossomed in diverse cultural and social contexts with such an intensity that with reason, to paraphrase Claudia Zaslavsky's Africa Counts, it may be said that "Africa Geometrizes" as well. Paulus Gerdes demonstrates the influence of geometrical ideas on African Culture with dozens of stories and beautiful illustrations.In his first section, Gerdes presents examples of geometrical ideas in the work of wood and ivory carvers, potters, painters, weavers, and mat and basket makers. In the next section he uses examples from Senegal and Madagascar to illustrate how diverse African ornaments and artifacts may be used to lead students to discover the Pythagorean Theorem and to find proofs of it. Paulus also explores connections to Pappus' Theorem, similar right triangles, Latin and magic squares, and arithmetic modulon.In the third section of this book, Paulus analyzes geometrical ideas inherent in various crafts and explores possibilities for their educational use. Topics include symmetrical wall decorations in Lesotho and South Africa, house building in Mozambique, and Liberia and finite geometrical designs from the Lower Congo region.The theme of the fourth section of this book is the geometry of the south-central African sand drawing traditionthe drawings are called sona in the Chokwe language (predominately northeast Angola). As slavery and colonial domination disrupted and destroyed so many African traditions, the sona tradition with its strong geometrical component virtually disappeared. Paulus explains this traditional method by which folklore was passed from generation to generation via beautiful, often symmetric, designs made in the sand and he offers many suggestions by which the reader will find mathematical ideas imbedded in their work.
Ships from: Boonsboro, MD
Usually ships in 1-2 business days
- •Standard, 48 States
- •Standard (AK, HI)
- •Express, 48 States
- •Express (AK, HI)