It is better to learn to think. The questions in this material are scientific, easy first and then difficult, with basic questions and improvement questions, and answers for reference. Learning and thinking is not as good as New Oriental Mathematics Collection.

Different people have different needs for textbooks, and they will choose textbooks from New Oriental or School Four respectively. If you are training in learning mathematics, you can consider choosing textbooks that learn and think, because the mathematics training of learning and thinking is second to none in the industry.