Abstract: Adaptive learning systems and process are described herein for providing an online learning environment for delivering a course comprising a plurality of learning activities having different levels of difficulty to a user in a manner that supports user motivation. The systems and processes described herein dynamically adapt the selection of learning activities to display to the user to find/maintain a personally selected challenge for the user. Learning activities require user input and can be used to test a user's proficiency of the corresponding subject matter. The system can also support user motivation by affording a user multiple opportunities to correctly complete a learning activity as well as providing hints to the user to increase the user's chance of successfully completing a learning activity on a subsequent attempt.