Algorithms for applying THEORY INTO PRACTICE IN MATH AND NATURAL SCIENCES I find the application of theory into practice in mathematics and natural sciences complex. The reason is that there is usually only one correct answer for each question. Many students train themselves by answering questions from previous years' exams or practice questions. However, they still had difficulty with new and confusing questions, even though they had practiced answering many questions. What preparations do you have to make to get into this room, can you handle any type of questions that are likely to come out of this room? No matter how the examiner tries to limit the questions, you can still answer them. To achieve that, you need a more systematic approach.