The first three chapters of this book introduce constructivist learning theory. The remaining chapters cover different types of constructivist learning environments, from anchored and authentic learning to zones of proximal development. Each chapter uses the same format: introduction to the strategy or approach including the supporting theoretical foundations, discussion of the supporting elements such as scaffolding or collaboration, an overview of the general strategy including the ways technology can support it, examples and variations of the strategy, and, finally, a discussion of the contexts in which the approach is appropriate and inappropriate.