A potential for learning probability in young children Ruma FalkRaphael FalkIris Levin OriginalPaper Pages: 181 - 204
Three-dimensional geometrical drawing in three cultures Michael C. Mitchelmor OriginalPaper Pages: 205 - 216
The development of proportional reasoning and the ratio concept Part I — Differentiation of stages Gerald Noelting OriginalPaper Pages: 217 - 253