Barnett, S., Kwanghee, J., Yaroz, D., Thomas, J, Hornbeck, A., Stechuk, R., & Burns, S.(2008). Educational effects of the Tools of the Mind curriculum. A randomized trial. Early Childhood Research Quarterly, 23, 299-313. doi:10.1016/j.ecresq.2008.03.001
 Barron, B., Schwartz, D. L.,Vye, N. J., Moore, A., Petrosino, T., Zech, L., & Bransford, J. D. (1998). Doing with understanding: Lessons from research on problem and project based-learning. The Journal of the Learning Sciences, 7, 271-311.
 Bloom, B. S., & Krathwohl, D. R. (1956). Taxonomy of educational objectives; the classification of educational goals by a committee of college and university examiners. Handbook I: Cognitive Domain. New York, NY; Longmans, Green.
 Bodrova, E., & Leong, D. (2001). Tools of the Mind: A case study of implementing the Vygotskian approach in American early childhood and primary classrooms. International Bureau of Education, Switzerland.
 Bodrova, E., & Leong, D. J. (2006). The development of self-regulation in young children:Implications for teacher training. In M. Zaslow, & I. Martinez-Beck (Eds.), Future Directions in Teacher Training (pp. 203-224). New York: Brooks-Cole.
 Brown, A. L., & Campione, J. C. (1994). Guided discovery in a community of learners. In K. McGilly (Ed.), Classroom lessons: Integrating cognitive theory and classroom practice. Cambridge, MA: MIT Press/Bradford Books.
 Brown, A. L., & Campione, J. C. (1996). Psychological theory and the design of innovative learning environments: On procedures, principles, and systems. In L. Schauble, & R. Glaser (Eds.), Innovations in learning: New environments for education (pp. 289-325). Mahwah, NJ: Erlbaum.
 Goe, L, & Stickler, L. (2008). Teacher quality and student achievement: Making the most of recent research. TQ Research & Policy Brief. URL (last checked 28 December 2011). www.tqsource.org/publications/March2008rief.pdf
 González, N., Andrade, R., Civil, M., & Moll, L. (2001). Bridging funds of distributed knowledge: Creating zones of practice in mathematics. Journal of Education of Students Placed at Risk, 6, 115-132. doi:10.1207/S15327671ESPR0601-2_7
 Hanusek, E., Kain, J., O’Brien, D., & Rivkin, S. (2005). The market for teacher quality. Working Paper n. 11154. Cambridge, MA: National Bureau of Economic Research. URL )last checked 28 December 2011). www.nber.org/papers/w11154.pdf
 Hmelo-Silver, C. E., Duncan, R. G., & Chinn, C. A. (2007). Scaffolding and achievement in problem-based and inquiry learning: A response to Kirschner, Sweller, and Clark, 2006. Educational Psychologist, 42, 99-107. doi:10.1080/00461520701263368
 Marcon, R. (2002). Moving up the grades: Relationship between preschool model and later school success. Early Childhood Research and Pratice, 4. URL (20 January 2010). http://ecrp.uiuc.edu/v4n1/marcon.html
 Pea, R. (2004). The social and technological dimensions of scaffolding and related theoretical concepts for learning, education, and human activity. Journal of the Learning Sciences, 13, 423-451. doi:10.1207/s15327809jls1303_6
 Scardamalia, M., & Bereiter, C. (1991) Higher levels of agency for children in knowledge building: A challenge for the design of new knowledge media. Journal of the Learning Sciences, 1, 37-68. doi:10.1207/s15327809jls0101_3
 Sherin, B., Reiser, B., & Edelson, D. (2004). Scaffolding analysis: Extending the scaffolding metaphor to learning artifacts. Journal of the Learning Sciences, 13, 387-421. doi:10.1207/s15327809jls1303_5
 Scott-Jones, D. (1995). Parent-child interactions and school achievement. In B. A. Ryan, G. R. Adams, T. P. Gullota, R. P. Weissberg, & R. L. Hampton (Eds.), The family-school connection: Theory, research, and practice (pp. 75-107). Thousand Oaks, CA: Sage.
 Verenikina, I. (2010). Vygotsky in twenty-first-century research. World Conference on Educational Multimedia, Hypermedia and Telecommunications 2010. URL (last checked 21 September 2010). http://research.kinasevych.ca/2010/07/verenikina-2010-vygotsky-in-twenty-first-century-research/