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CNX Connexions is a rapidly growing collection of free scholarly materials and a powerful set of free software tools to help    * authors publish and collaborate    * instructors rapidly build and share custom courses    * learners explore the links among concepts, courses, and disciplines.Connexions is internationally focused, interdisciplinary, and grassroots organized. More than one million people from 157 countries are tapping into the 3178 modules and 151 courses developed by a worldwide community of authors in fields ranging from computer science to music and from mathematics to biodiversity. In addition to modules written in English, you can find modules written in Chinese, Italian, Japanese, Portuguese, Spanish, and Thai.