子课题名称：科学游戏融入大班科学区活动的实践研究

科学游戏

内容

名称：弹弹球

材料：一次性纸杯、气球、剪刀若干   

玩法：

用剪刀从纸杯底部三分之一处剪下，同时剪去气球的顶端，并用纸张揉成小球。用力捏住气球的尾部射出去。

科学原理：

    拉动气球，空气大量进入气球底部，中间有空隙，气球下方的空气体积增大，当手松开的时候，空气压强足以顶出纸球。

课题实施情况

观察：

活动过程中，有的孩子第一次试验没有成功，我们共同寻找错误的原因原来是气球剪得位置不对，找出错误之后，马上重新试验了起来，并且成功了。

分析：

本次活动即可让幼儿动手操作，培养幼儿的动手能力，锻炼幼儿的小肌肉能力的发展。又可以让幼儿在操作中感受科学小游戏带来的快乐，感受力与力之间的反作用力。

子课题名称：科学游戏融入大班科学区活动的实践研究

科学游戏

内容

名称：荷塘月色

材料： A4白纸若干、彩笔若干、剪刀一把、盘子一个   

玩法：

    1.将A4纸裁剪成多张小纸片，用不同颜色的彩笔在小纸片上画上花朵的轮廓并上色。

    2.沿着花朵的轮廓线裁剪。往盘中倒入含有食用色素的凉水，将刚才折叠好的纸花轻轻放在水面上，观察纸花接下来发生的现象。    

科学原理：

    纸张中含有大量的植物纤维，当水渗入纸张的纤维后，纤维会膨胀，使得纸张会沿着折位张开，于是就出现了类似花开的效果。

课题实施情况

观察：

通过上面的实验我们发现，纸花折叠好后能持续保持折叠的状态，但是当把纸花放在水面上之后，纸花慢慢沿着折线展开。

分析：

孩子们都很兴奋，觉得花放水里真的就开花了，很神奇。在游戏中，孩子们还尝试了两张纸折叠做成一朵花，放水里会开花吗？在孩子的主动探索中，也会得到意外的收获。

子课题名称：科学游戏融入大班科学区活动的实践研究

科学游戏

内容

游戏名称：彩虹桥

材料准备：

玻璃杯5个、卫生纸、滴管1个、色素3种                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

游戏玩法：

    1.将卫生纸折成小纸条，并从中间对折一下。

    2.往三个杯中各滴1滴食用色素并倒入大半杯清水。将另外两个空杯子穿插摆放在三个水杯中间排成一列。

    3.将刚才折好的小纸条架在两杯之间，形成一座纸桥，仔细观察纸条颜色变化。

科学原理：

    纸条和水接触后，水分逐渐沿着纸条往上爬升越杯沿并从另一端滴落到旁边的杯子。

课题实施情况

观察：

孩子们都兴趣高涨，看到了有颜色的液体在慢慢升高，都拍手叫好，那为什么会在餐巾纸上升高呢？老师也在实验中让幼儿懂得了毛细现象。

分析：

我们的至今里还有大量植物纤维，每根纤维类似毛细管，孩子们又自主合作，用不同的颜色、不同粗细的卫生纸条，试试哪种会比较快。

子课题名称：科学游戏融入大班科学区活动的实践研究

科学游戏

内容

游戏名称：彩虹摩天轮

材料准备：

彩虹糖1包、盘子一个                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          

游戏玩法：

    1.取出约20粒彩虹糖，颜色错落的均匀摆放在盘中围城一圈。

    2.往盘子中央部位轻轻倒入约30ML常温的清水，水面高度与彩虹糖中间位置高度一致。

    3.观察彩虹糖色素在盘中扩散。

科学原理：

    彩虹糖色素和水均属于极性分子，两者相似相溶。

课题实施情况

观察：

    通过这个实验小朋友发现，彩虹糖接触水之后，色素开始向四周扩散。当扩散到一定程度时，色素开始朝盘子中央扩散，孩子们都感觉很神奇，大概过了一会，逐渐形成一个彩虹摩天轮的形状。

分析：

孩子们自主操作的时候，都对这个小实验感觉很有兴趣，都纷纷来问我，为什么会形成这个形状，在最后，我告诉孩子们，彩虹糖色素和水都属于极性分子，两者相似相溶。

子课题名称：科学游戏融入大班科学区活动的实践研究

科学游戏

内容

游戏名称：脏水净化器

材料准备：

玻璃杯2只、面巾纸1张、沙土、搅拌勺。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     

游戏玩法：

   先取少量沙土倒入杯子中，然后加入清水，用勺子轻轻搅拌。将面巾纸卷成条状，面巾纸两头分别放在两个并排放的杯子中，其中一个杯子装有浑水，另一个杯子则是空的，将纸巾的一端浸入浑水中，观察水分吸附情况。

科学原理：

   由于面巾纸的纤维可以将水分子吸上来，就是“毛细现象”，由于沙土不能被吸附上来，水和泥沙就此分离开来，因此滴落在空杯子里的水就是干净的了，从而实现了净化脏水的功能。

课题实施情况

观察：

   今天的科学小游戏对孩子们来说非常的新鲜有趣，要把混有沙土的浑浊的水净化，孩子们一开始觉得很有难度，甚至觉得不太可能。

分析：

通过实验后，孩子们发现其实也不难嘛！他们都颇有成就感，就是在实验操作的过程中，桌面和地面的整洁情况不是很好，沙土弄得到处都是，后续的整理工作非常的令人头疼，好在孩子们玩的还是很尽兴的。

子课题名称：科学游戏融入大班科学区活动的实践研究

科学游戏

内容

游戏名称：漂浮的绣花针

材料准备：

玻璃器皿、绣花针、面巾纸。                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             游戏玩法：

   先在装有水的玻璃器皿中放入一根绣花针，发现绣花针沉入水底，然后再放入一张纸巾，把绣花针再放在纸巾上面，绣观察绣花针和纸巾的变化。

科学原理：

   当纸巾完全离开绣花针沉入水底后，绣花针由于水的表面张力就继续漂浮在了水面上。针尖锐利，所以实验过程没有让孩子单独操作，可以回家和爸爸妈妈一起试试看。

课题实施情况

观察：

实验由于涉及到绣花针，存在一定的危险性，所以没有幼儿个别自己操作，我直接进行了集体实验，请了个别幼儿上来体验和感知。当幼儿发现绣花针一开始沉入水底，放入纸巾后，纸巾沉下去了，绣花针却漂浮在水面上，幼儿对这一现象感到好奇不已也很疑惑不解。

分析：

和之前有的实验原理差不多，都是与水的张力有关，绣花针周边的水分子由于纸巾的加入，有了重新形成张力的时间，当纸巾完全离开绣花针沉入水底后，绣花针由于水的表面张力就继续漂浮在了水面上。针尖锐利，所以实验过程没有让孩子单独操作，可以回家和爸爸妈妈一起试试看。

子课题名称：科学游戏融入大班科学区活动的实践研究

科学游戏

内容

游戏名称：牙签变身五角星

材料准备：

牙签、水、盘子、吸管、水杯。

游戏玩法：

先把几根牙签有序的放在盘子里，然后用吸管吸取一些水，放入盘子中，发现牙签自己变形，变成了五角星。

科学原理：

这个实验主要利用了水的张力。由于牙签由木质纤维构成，沾水后断裂处会吸水，所以半断掉的牙签会有重新伸直的倾向。同时，水的表面张力扩开了被折断的两半牙签，因此，拼合的牙签就变成了五角星了！

课题实施情况

观察：

选材来源于日常生活中较常见的现象。整个活动设计过程，都是以孩子为主体，孩子们始终在宽松的氛围下主动学习，大胆运用语言表达自己观察到的事物现象。

分析：

在游戏中让自己成为一个支持者，并努力让孩子成为活动的主人，适当时候做个引导者，使孩子们主动观察、发现和探索，整个过程很轻松，孩子们玩的也很快乐。