Lesson number two... Just be quiet, and listen.
第二课，约会时只要安安静静的聆听。
Key Number Two Prepare interesting, colorful captivating lesson plans and deliver them with gusto.
第二把钥匙要把课准备得生动有趣、丰富多彩，讲课要讲得津津有味。
This article combines two aspects together: that is, take a lesson from the history of mathematics and melt the history of prime number into the design of teaching plan for school-based curriculum.
本文将这两个方面的问题结合在一起：以数学史为鉴，将素数的数学史融入校本教案进行设计。
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