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Three Chalks in 2023-Mathematics is a set of tutoring materials specially designed for students to prepare for the exam. It covers important knowledge points and test sites of junior high school mathematics, including algebra, geometry, probability and statistics. This material is characterized by clear explanations and rich examples, which helps students to understand and master mathematical concepts and problem-solving skills. In addition, a large number of exercises and simulation questions are provided to help students consolidate their knowledge, familiarize themselves with the examination forms, and provide detailed analysis and answers. This information can provide strong support and guidance for students, whether it is to consolidate review or targeted intensive training.