Equations in elementary school. (English)

Lindmeier, Anke M. (ed.) et al., Proceedings of the 37th conference of the International Group for the Psychology of Mathematics Education “Mathematics learning across the life span", PME 37, Kiel, Germany, July 28‒August 2, 2013. Vol. 4. Kiel: IPN‒Leibniz Institute for Science and Mathematics Education at the University of Kiel (ISBN 978-3-89088-290-1). 161-168 (2013).

1

"We all have something that has to do with tens": Counting school days, decomposing number, and determining place value. (English)

Teach. Child. Math. 15, No. 2, 74-79 (2008).

2

Algebra in elementary school. (English)

Pateman, Neil A. et al., Proceedings of the 27th Conference of the International Group for the Psychology of Mathematics Education held jointly with the 25th Conference of PME-NA. Vol. 4. ,. 127-134 (2003).

3