ALEKS

ALEKS (Assessment and Learning in Knowledge Spaces) is an online tutoring and assessment program developed by ALEKS Corporation that includes course material in mathematics, chemistry, introductory statistics, and business.

Rather than being based on numerical test scores, ALEKS uses the theory of knowledge spaces to develop a combinatorial understanding of the set of topics a student does or doesn't understand from the answers to its test questions. Based on this assessment, it determines the topics that the student is ready to learn and allows the student to choose from interactive learning modules for these topics.