Strategies for solving mathematical problems. Various approaches to typical tasks

Any problem can be solved in different ways, but in textbooks they most often offer only one solution. The real skill is not to use the standard method from time to time, but to find the most suitable, even unusual, method of solution.
This book tells about ten different strategies for solving problems. Each chapter begins with a description of a specific strategy and how it can be used in household situations, and then examples of the application of such a strategy in mathematics are given. For each task, the authors give the standard solution first, and then a more elegant and unusual method. So you will find out how much the strategy under consideration facilitates the search for an answer