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; and
learners explore the links among concepts, courses, and disciplines.
Connexions contains educational materials for children, college students, and professionals.
More than one million people from 157 countries use the 3206 modules and 155 courses developed by authors worldwide in fields ranging from computer science to music and from mathematics to biodiversity.