为了让学生有时间、有机会充分地了解圆的文化，理解圆的知识，渭南高新区教育文体局组织各校数学组利用暑假开展了一系列关于“圆的认识”实践性作业活动。学生依据所收集的资料，通过绘画、思维导图、手抄报等形式，多方面展示圆的相关知识。

一、探索圆周率

同学们动手把了解到的关于π的知识画成了数学手抄报，用图画和文字记录下自己收获，在交流分享中对π的发展有了更全面的认识，更是对数学历史产生浓厚的兴趣。

二、圆元素之巧手设计

通过对圆的认识学习，进一步感受圆的特征，体会图形的变换，提高学生动手能力和创造能力，学生们用自己最喜欢的方式表达着“内心的圆”，瞧！孩子们画得多有创意啊！

三、圆知识预习思维导图

孩子们根据自己的知识水平、认知程度、生活经验进行了尝试性学习，把知识条理化和体系化，并制作圆的预习思维导图。在预习的基础上拓展了科学性、趣味性和针对性内容，使学习变得灵活生动。

四、花样圆面积公式推导

我们都知道，圆的面积公式为S圆=πr2，那公式究竟是如何的来的呢？让我们跟随孩子们的视角一起来看看他们的推导过程吧。

五、圆说数学文化

在数学上，圆是“正无限多边形”，圆周率是一个无限不循环小数，所以圆同时也代表着无限可能，代表着人类永无止境的幻想和探索！因此，这也引起了学生对圆文化的探究热情。

渭南高新区教育文体局表示，这次数学特色实践活动更是一场探寻“美”的旅程，孩子们在欣赏美、发现美、创作美的过程中，调动学习积极性、提高学习兴趣。在动手动脑中，感受美在数学，美在生活，为自己插上想象的翅膀，用智慧扮美生活，为生活增色添彩。

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