ALEKS (Assessment and Learning in Knowledge Spaces) is an online tutoring and assessment program  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. 
ALEKS was initially developed at UC Irvine starting in 1994 with support from a large National Science Foundation grant.  The software was granted by UC Irvine's Office of Technology Alliances to ALEKS Corporation under an exclusive, worldwide, perpetual license.  In 2013, the ALEKS Corporation was acquired by McGraw-Hill Education. 
ALEKS is available for a variety of courses and subjects that cover K-12, higher education, and continuing education, ranging from basic arithmetic and chemistry to pre-calculus and MBA financial accounting preparation. 
- Doignon & Falmagne (1999); Canfield (2001); Hardy (2004).
- Canfield (2001); Alsup & Stillson (2003); Hardy (2004); Hagerty & Smith (2005); Tempelaar et al. (2006); Hampikian et al. (2007); Cheney et al. (2011).
- Grayce (2013).
- Miller (2005); Xu, Meyer & Morgan (2009).
- Baxter & Thibodeau (2011).
- Doignon & Falmagne (1999); Miller (2005); Baxter & Thibodeau (2011).
- Canfield (2001).
- "Bridging the gap: Adaptive learning program developed at UCI supplements and reinforces math and science skills - July 1, 2013, UCI News". UCI News. Retrieved 2014-11-22.
- "Research Behind ALEKS".
- "McGraw-Hill Education Agrees to Acquire ALEKS Corporation, Developer of Adaptive Learning Technology... - NEW YORK, June 20, 2013 /PRNewswire/". Prnewswire.com. Retrieved 2014-03-25.
- "Course offerings".
- Alsup, John; Stillson, Holly (2003), "Smart ALEKS ... or not? Teaching Basic Algebra using an online interactive learning system", Mathematics and Computer Education, 37 (3): 329–336, archived from the original (subscription required) on 2015-04-02.
- Baxter, Ryan J.; Thibodeau, Jay C. (2011), "Does the Use of Intelligent Learning and Assessment Software Enhance the Acquisition of Financial Accounting Knowledge?", Issues in Accounting Education, 26 (4): 647–656, doi: 10.2308/iace-50052.
- Canfield, Ward (2001), "ALEKS: a Web-based intelligent tutoring system", Mathematics and Computer Education, 35 (2): 152–158, archived from the original (subscription required) on 2015-04-02.
- Cheney, K. R.; Craig, S. D.; Anderson, C.; Bargagliotti, A.; Graesser, A. C.; Sterbinsky, A.; Okwumabua, T.; Hu, X. (2011), "Closing the knowledge gap in mathematics among sixth grade students using ALEKS", in Koehler, M.; Mishra, P., Proceedings of Society for Information Technology & Teacher Education International Conference 2011, Chesapeake, VA: AACE, pp. 1425–1427.
- Doignon, Jean-Paul; Falmagne, Jean-Claude (1999), "A Practical Application: The Aleks System", Knowledge Spaces, Berlin, Heidelberg, and New York: Springer-Verlag, pp. 9–10.
- Grayce, Christopher J. (2013), "A commercial implementation of knowledge space theory in college general chemistry", in Falmagne, Jean-Claude; Albert, Dietrich; Doble, Chris; Eppstein, David; Hu, Xiangen, Knowledge Spaces: Applications in Education, Springer.
- Hagerty, Gary; Smith, S. (2005), "Using the Web-Based Interactive Software ALEKS to Enhance College Algebra", Mathematics and Computer Education, 39 (3): 183–194, archived from the original (subscription required) on 2015-04-02.
- Hampikian, Janet; Guarino, Joe; Chyung, Seung Youn; Gardner, John; Moll, Amy; Pyke, Pat; Schrader, Cheryl (2007), "Benefits of a tutorial mathematics program for engineering students enrolled in precalculus: a template for assessment", ASEE Annual Conference (PDF).
- Hardy, Michael E. (April 2004), "Use and evaluation of the ALEKS interactive tutoring system", Journal of Computing Sciences in Colleges, 19 (4): 342–347.
- Miller, L. Michele (2005), "Using learning styles to evaluate computer-based instruction", Computers in Human Behavior, 21 (2): 287–306, doi: 10.1016/j.chb.2004.02.011.
- Tempelaar, Dirk; Rienties, Bart; Rehm, Martin; Dijkstra, Joost; Arts, Mark; Blok, Geke (2006), "An online summer course for prospective international students to remediate deficiencies in math prior knowledge: the case of ALEKS", Proc. First WebALT Conference (PDF), pp. 23–26, archived from the original (PDF) on 2012-04-25.
- Xu, Yonghong Jade; Meyer, Katrina A.; Morgan, Dianne D. (2009), "A mixed-methods assessment of using an online commercial tutoring system to teach introductory statistics", Journal of Statistics Education, 17 (2).
- ALEKS Publications, (c) (2007), "Dramatic Learning Outcomes: Mathematics" (PDF), White Paper, 1 (1).