The power of problem solving that fosters the habit of thinking like a mathematician: Finding rules!
If you need to calculate numbers listed according to a certain rule up to a large number, calculating them one by one is cumbersome and it is easy to make mistakes during the calculation process.
In cases like this, if we can find the hidden rule, the problem can be easily solved.
Finding a rule in given facts or relationships and solving the problem in this way is called the "pattern finding" method. "Pattern finding" is one of the most widely used strategies for problem solving. It is useful for predicting and inferring new information by recording the results, state, or shape of changes implemented based on certain facts and finding a pattern from the relationship.


This book introduces the historical background of how humans discovered rules while observing recurring natural phenomena in the process of adapting to nature, and provides an interesting story about the Pythagorean school, which equated the rules discovered while immersed in the study of numbers and shapes with the order of the world.
It also explains in detail how to find certain rules through principles in the arrangement of numbers, arrangement of shapes, intersections and areas, number of shapes, calendars, Go games, and everyday life.
This process is structured in various ways to foster problem-solving skills by studying regularity-finding strategies.