Research outputs A micro-developmental approach to studying young children’s problem solving behavior in addition Chronoula Voutsina, 2012, Journal of Mathematical Behavior, 31(3), 366-381 DOI: 10.1016/j.jmathb.2012.03.002 Type: article Procedural and conceptual changes in young children’s problem solving Chronoula Voutsina, 2012, Educational Studies in Mathematics, 79(2), 193-214 DOI: 10.1007/s10649-011-9334-1 Type: article