This book enables you to reappraise central aspects of classical school mathematics. You will be guided humorously and encouragingly through the world of algebra - from simple linear terms, equations, functions, and systems of equations to quadratic functions and equations, powers, roots, and logarithms. With the help of detailed explanations and examples, you will learn how to deal competently and fearlessly with the notorious "bogeymen" of school mathematics. Calculating with variables, equations, functions, binomial formulas, polynomial division, logarithms, as well as a number of other terms and procedures are consistently unveiled. The book is therefore suitable for anyone who has to deal with these very topics: prospective students, trainees, helpless parents and pupils, and working people.