Biology for CXC is a comprehensive course for students in their fourth and fifth years of secondary school who are preparing for the CXC Examinations in Biology. The book has seven main sections, each divided into smaller self contained units to allow a flexible approach to teaching and learning.

This book explores global issues in the professional development of science teachers, and considers classroom applications of teacher training with a comparative lens. The twelve studies collected in this volume span five continents and vastly differing models of teacher education. Carefully detailing the social and cultural contexts for the teaching of science, this is a guidebook for anyone concerned with equity and reform in professional development.

Henry O. Pollak Chairman of the International Program Committee Bell Laboratories Murray Hill, New Jersey, USA The Fourth International Congress on Mathematics Education was held in Berkeley, California, USA, August 10-16, 1980. Previous Congresses were held in Lyons in 1969, Exeter in 1972, and Karlsruhe in 1976. Attendance at Berkeley was about 1800 full and 500 associate members from about 90 countries; at least half of these come from outside of North America. About 450 persons participated in the program either as speakers or as presiders; approximately 40 percent of these came from the U.S. or Canada. There were four plenary addresses; they were delivered by Hans Freudenthal on major problems of mathematics education, Hermina Sinclair on the relationship between the learning of language and of mathematics, Seymour Papert on the computer as carrier of mathematical culture, and Hua Loo-Keng on popularising and applying mathematical methods. Gearge Polya was the honorary president of the Congress; illness prevented his planned attendence but he sent a brief presentation entitled, "Mathematics Improves the Mind". There was a full program of speakers, panelists, debates, miniconferences, and meetings of working and study groups. In addition, 18 major projects from around the world were invited to make presentations, and various groups representing special areas of concern had the opportunity to meet and to plan their future activities.

Structure of the flowering plant. Physiology of the flowering plant. Physiology of the flowering plant. The plant kingdom. Ecology and genetics.

A unique account of the structure, biology and evolution of tropical flowering plants.

Can we prevent the destruction of the world's tropical forests? In the fire-scarred hills of Costa Rica, science writer William Allen found an answer: we can not only prevent their destruction - we can bring them back to their former glory. 'Green Phoenix' reveals how the tropical forests in the northwestern section of the country were saved.

A fresh and compelling look at wild and awesome examples of weather in this revised and updated book in the Wonders of Creation series! Did you know the hottest temperature ever recorded was 134° F (56.7° C) on July 10, 1913 in Death Valley, California? The highest recorded surface wind speed was in the May 3, 1999, Oklahoma tornado, measured at 302 mph (486 kph)! The most snow to fall in a one-year period is 102 feet (3,150 cm) at Mount Rainier, Washington, from February 19, 1971 to February 18, 1972! From the practical to the pretty amazing, this book gives essential details into understanding what weather is, how it works, and how other forces that impact on it. Learn why storm chasers and hurricane hunters do what they do and how they are helping to solve storm connected mysteries. Discover what makes winter storms both beautiful and deadly, as well as what is behind weather phenomena like St. Elmo’s Fire. Find important information on climate history and answers to the modern questions of supposed climate change. Get safety tips for preventing dangerous weather related injuries like those from lightning strikes, uncover why thunderstorms form, as well as what we know about the mechanics of a tornado and other extreme weather examples like flash floods, hurricanes and more. A fresh and compelling look at wild and awesome examples of weather in this revised and updated book in the Wonders of Creation series!