1. Ball, C.: Start Right: The Importance of Early Learning. Lesley James, Royal Society for the Encouragement of Arts, Manufactures and Commerce, London (1994)
2. Greenstone, M., Harris, M., Li, K., Looney, A., Patashnik, J.: A Dozen Economic Facts About K-12 Education. The Hamiliton Project (2012),
http://www.hamiltonproject.org/files/downloads_and_links/THP_12EdFacts_2.pdf
3. Negroponte, N., Resnick, M., Cassell, J.: Creating a Learning Revolution. MIT Media Lab (1997)
4. Bettelheim, R.: Outdated teaching is failing our children. USA Today (2010),
http://usatoday30.usatoday.com/news/opinion/forum/2010-11-10-column10_ST1_N.htm
5. Castell, S., Jenson, J.: Paying Attention to Attention: New Economies for Learning. Educational Theory, 381–397 (2004)