This book is the result of a cooperative project of several European countries--Belgium, Greece, Ireland, the Netherlands, Portugal, Spain, and the United Kingdom. Each country involved provides a chapter outlining a national project or a specific organization presents its own approach and initiatives to teacher education, with particular reference to Logo. An introductory chapter presents a discussion of Logo-features, teaching and learning with Logo, the impact of Logo on teaching and learning, constructivism, the potential of Logo, and the dimensions of microworlds. The overall purpose of the volume is: to present a range of approaches to teacher education in Logo-based environments; to raise issues in relation to principles when using Logo in a teacher education environment; to define the variety of aims of teacher education in Logo-based environments; and to highlight the value of Logo in teacher education programs. Specific chapters feature a variety of examples of teacher education initiatives; key features of initiatives that influence success or failure of teacher education; approaches to the evaluation of projects; references to support materials; theoretical foundations of teacher education approaches, and specific implementations of these theoretical points of view. (LL)