The first volume of the proceedings of the 21st annual meeting of the International Group for the Psychology of Mathematics Education contains the following 13 full papers: (1) "Some Psychological Issues in the Assessment of Mathematical Performance" (O. Bjorkqvist); (2) "Neuromagnetic Approach in Cognitive Neuroscience" (S.…

The second volume of the proceedings of 21st annual meeting of the International Group for the Psychology of Mathematics Education contains the following papers: (1) "The Dilemma of Transparency: Seeing and Seeing through Talk in the Mathematics Classroom" (J. Adler); (2) "Abstraction is Hard in Computer-Science Too" (D.…

The third volume of the proceedings of 21st annual meeting of the International Group for the Psychology of Mathematics Education contains the following papers: (1) "Graphics Calculators Use in Precalculus and Achievement in Calculus" (P. Gomez and F. Femandez); (2) "Tapping into Algebraic Variables through the Graphic…

The fourth volume of the proceedings of 21st annual meeting of the International Group for the Psychology of Mathematics Education contains the following papers: (1) "A Model for Discriminating amongst Student Teachers of Mathematics" (P. Perks); (2) "A Study of Teachers' Conceptions about Mathematics" (G.N. Philippou and C.…

This book is the third in a series of family math books whose aim is to involve parents and their children in middle school mathematics. All the activities contained in this guide are based on the National Council of Teachers of Mathematics (NCTM) Standards, and most activities involve several integrated math concepts rather than isolated skills.…

The first article describes students' activities with tiling patterns and tessellations; the second discusses the use of balances and weights as an approach to number concepts. (DT)

Specific examples of activities that have been effective in classrooms are described. (LS)

Describes work with kindergarten children to improve their development of estimation, decision making, divergent thinking, directionality, numerical concepts, and creative problem solving skills through learning to program and control the robot Big Trak, a truck which moves along the floor in response to their commands. (EAO)

Experiences with complex numbers and graphical representations of them are discussed, with a program for a microcomputer. (MNS)

The emergence and differentiation of partitioning as a process that leads young children to construct ideas of rational numbers was traced through clinical sessions with 43 primary children as they manipulated objects. The data analysis led to a five-level theory of the partitioning process. (MNS)

A set of three worksheets is provided, along with a guide for the teacher. Using manipulative materials, students investigate the difference between the consecutive sums of the numbers along the three sides of a triangle. (MNS)

While most elementary teachers experience little difficulty using the decimal system for whole numbers, many do not have the desired depth of understanding for teaching the system. The focus of the material is stage-by-stage creation of a hypothetical numeration system. (MP)

A sequence of seven graphing activities is suggested for developing both prenumeration and numeration concepts and skills. (MP)