9月29日，小学部数学组三位骨干教师前往紫荆小学，共同参与了两校联合教研活动。

大家观摩了紫荆小学李乐怡老师执教的一年级数学课《第几》。李老师以生动有趣的教学方式，引导学生理解“第几”的概念。课后，紫荆小学一年级数学组教师详细介绍了他们如何借助STAR模型对本节课进行教学设计，从情境创设到目标达成，层层递进，思路清晰。随后，两校教师就本节课的教学重难点以及如何突出重点、突破难点等核心问题，展开了热烈而深入的研讨与交流。大家各抒己见，碰撞思想，在交流中互学互鉴，共同提升。

On September 29, three backbone teachers from the Primary School Mathematics Group visited Zijing Primary School. They observed Ms. Li Leyi’s first-grade math lesson, “Which Number.” After class, Zijing’s first-grade math team shared how they used the STAR model in lesson design. Teachers from both schools then discussed the lesson’s key and difficult points, learning from each other and improving together.