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? Pwd= 1234 extraction code: 1234 K 12 education is a comprehensive basic education from pre-school education to high school education, aiming at cultivating students' all-round development. Among them, primary school mathematics network course and synchronous tutoring course are important components. Primary school mathematics network course provides rich mathematics learning resources and interactive teaching through network learning platform, which helps students consolidate basic knowledge and cultivate problem-solving ability. The synchronous tutoring teaching course provides synchronous tutoring and guidance with the school curriculum, helping students to better understand and apply what they have learned. The goal of these courses is to provide personalized learning support and promote students to achieve better results and all-round development in mathematics learning.