https://eric.ed.gov/?q=attention+AND+size&ff1=subAcademic+Achievement&id=EJ1402374
https://eric.ed.gov/?
q=source%3A%22journal+of+educational+computing+research%22&ff1=subTeaching+Methods&id=EJ1441048
https://experts.illinois.edu/en/publications/exploring-the-impact-of-personalized-and-adaptive-learning-techno