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? Pwd= 1234 extraction code: 1234 K 12 Education provides diversified mathematics learning courses for primary school students. We provide the first-year spring class 202 1 winter vacation training class on learning and thinking about mathematics to help students consolidate their basic knowledge of mathematics during the winter vacation. At the same time, we also have a long-distance flight to learn and think about first-year mathematics, and lead students to sail in the ocean of mathematical knowledge through live courses. In addition, we also provide Class S, aiming at the study and thinking of Grade One Mathematics 202 1 in Vencent Yang, to set students' learning goals in autumn and provide corresponding curriculum support. Through these carefully designed courses, we help students build a solid mathematical foundation and cultivate their mathematical thinking and problem-solving ability.