Dr Paul Swan book about activities with cubes

This volume on ethnomathematics in Central Africa fills a gap in the current literature, focusing on a region rarely explored by other publications. It highlights the discovery of the Ishango rod, which was found to be the oldest mathematical tool in humanity's history, thereby shifting the origin of mathematics to the heart of Africa, and explores the different scientific hypotheses that emerged as a result. While it contains some high-level mathematics, the non-mathematical reader can easily skip these portions and enjoy the book’s survey of African history, culture, and art.

Writing in Math Class presents a clear and persuasive case for making writing a part of math instruction. Author and master teacher Marilyn Burns explains why students should write in math class, describes five different types of writing assignments for math, and offer tips and suggestions for teachers. In her usual engaging style, Marilyn Burns tells what happened in actual classrooms when writing was incorporated into math lessons. Illustrated throughout with student work. With a foreword by Susan Ohanian.

Modern-day fly fishing, like much in life, has become exceedingly complex, with high-tech gear, a confusing array of flies and terminal tackle, accompanied by high-priced fishing guides. This book reveals that the best way to catch trout is simply, with a rod and a fly and not much else. The wisdom in this book comes from a simpler time, when the premise was: the more you know, the less you need. It teaches the reader how to discover where the fish are, at what depth, and what they are feeding on. Then it describes the techniques needed to present a fly at that depth, make it look lifelike, and hook the fish. With chapters on wet flies, nymphs, and dry flies, its authors employ both the tenkara rod as well as regular fly fishing gear to cover all the bases. Illustrated by renowned fish artist James Prosek, with inspiring photographs and stories throughout, Simple Fly Fishing reveals the secrets and the soul of this captivating sport.