http://eur-lex.europa.eu/resource.html?uri=cellar:fa6ea15b-b7b0-11e6-9e3c-01aa75ed71a1.0001.02/DOC_1&format=PDF
https://www.brookings.edu/blog/brown-center-chalkboard/2021/09/28/flipped-learning-what-is-it-and-when-is-it-effective/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=167047667&utm_source=hs_email
https://www.brookings.edu/research/it-is-time-to-restore-the-us-office-of-technology-assessment/?utm_campaign=Brookings%20Brief&utm_medium=email&utm_content=110969325&utm_source=hs_email