Elementary School Mathematics is written for elementary school teachers as well as parents who wish to be involved in their childrens first steps in mathematical education. The reading of this book will benefit educators - whether at home or at school - by consolidating their content knowledge, while exposing them to both complexity and beauty of elementary mathematics.

Game theory is a mathematical discipline that deals with the modeling and the analysis of interactive decision situations. Such situations involve several decision makers that have different goals, and the decision of each one of them may affect the other decision makers. The theory originated in the 1940s, and since then it has been applied in many areas , like economics, biology, computer science, and political science. The book is especially well adapted to teaching: classical mathematical results are presented with mathematical completeness and rigor. The teacher will find all the material necessary for a mathematical understanding of the theory, without any need to use other sources. In addition, the book is replete with exercises of varying levels of difficulty, starting with easy exercises for beginners and ending with difficult ones suited for Ph.D. students.

A paradox is the mathematician's best joke. Like a good joke, the paradox develops easily, in a logical and seemingly plausible manner, until it reaches the punch line, which is an unbelievable, completely surprising error, which gleefully mocks simple logic. Some paradoxes are easily explained because they rely on the incorrect use of a well-known basic rule. Some believe that such mistakes should not be called paradoxes at all, but only erroneous arguments. This book is a collection of paradoxes, fallacies and thinking challenges which are suitable for integration into mathematics studies in high school. Each of the activities in this book will encourage students to see familiar mathematical concepts in a new light and deepen their understanding of these concepts.