Journal articles for educators
This is a sample of professional journal articles that have used Panamath.
Halberda, J., Mazzocco, M., & Feigenson, L. (2008). Individual differences in nonverbal number acuity predict maths achievement. Nature, 455, 665-668. [pdf] [supplementary info]
Halberda, J. & Feigenson, L. (2008). Developmental change in the acuity of the "Number Sense": The approximate number system in 3-, 4-, 5-, 6-year-olds and adults. Developmental Psychology, 44(5), 1457-1465. [pdf]