1. Allen, M. J., & Yen, W. M. (1979). Introduction to measurement theory. Monterey: Brooks/Cole.
2. Ansari, D., & Karmiloff-Smith, A. (2002). Atypical trajectories of number development: a neuroconstructivist perspective. Trends in Cognitive Sciences, 6(12), 511–516.
3. Baroody, A. J. (1992). The development of preschoolers’ counting skills and principles. In J. Bideaud, C. Meljac, & J. P. Fischer (Eds.), Pathways to number: Children’s developing numerical abilities (pp. 99–126). Hillsdale: Lawrence Erlbaum Associates Inc.
4. Bergan, J. R., Sladeczek, I. E., Schwarz, R. D., & Smith, A. N. (1991). Effects of a measurement and planning system on kindergarteners’ cognitive development and educational programming. American Educational Research Journal, 28(3), 683–714.
5. Black, P., & Wiliam, D. (1998). Inside the black box: Raising standards through classroom assessment. Phi Delta Kappan, 80(2), 139–148.