"This book is the fourth – and final – publication in the TAL project series. This TAL project was initiated by the Dutch Ministry of Education, Culture and Science, with the aim to improve the quality of mathematics education by providing a perspective on didactic goals and learning-teaching trajectories, and on the relationship between them. The focus of this book is on measurement and geometry in the upper grades of primary education. Measurement and geometry are important topics which perhaps do not get the emphasis they deserve. They build, in a manner of speaking, a bridge between everyday reality and mathematics. Measurement concerns the quantification of phenomena; consequently, it makes these phenomena accessible for mathematics. Geometry establishes the basis for understanding the spatial aspects of reality. See for extra information related to this book:www.fi.uu.nl/publicaties/subsets/measurementgeometry/"