https://www.educause.edu/research-and-publications/books/learning-spaces/chapter-6-psychology-learning-environments
https://www.researchgate.net/publication/277903201_The_Mere_Presence_of_a_Cell_Phone_May_be_Distracting_Implications_for_Attention_and_Task_Performance
https://www.cell.com/neuron/fulltext/S0896-6273(18)30636-6?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0896627318306366%3Fshowall%3Dtrue
https://kstatelibraries.pressbooks.pub/EDCI702/chapter/module-8-research-based-instructional-strategies/
www.nais.org/magazine/independent-teacher/fall-2008/introducing-and-using-the-discussion-(aka-harkness/
www.amazon.com/Handbook-Classroom-Instruction-that-Works/dp/0131195050
files.eric.ed.gov/fulltext/EJ1189601.pdf
news.harvard.edu/gazette/story/2010/11/wandering-mind-not-a-happy-mind/
www.hepg.org/hep-home/books/understanding-youth
