挖掘机幼儿园讲课稿范文

挖掘机幼儿园讲课稿范文
【挖掘机幼儿园讲课稿】
一、导入
大家好！今天我给大家讲一个非常有趣的主题——挖掘机。

你们知道挖掘机是什么吗？它能做什么呢？
二、挖掘机的介绍
挖掘机是一种工程机械，它主要用来挖土、运输土方、清理渣土等工作。

挖掘机的外形有点像一只大怪兽，它有两个大眼睛，像是在看我们。

而且它有一个很大的铲子，可以挖很多土方。

它的手臂还能旋转，可以把挖到的土方倒在我们想要的地方。

三、挖掘机的部件
我们来看一下挖掘机的部件。

挖掘机有主机、铲斗、液压系统、电气系统等。

主机就是挖掘机的身体，它负责提供动力，让挖掘机工作。

铲斗就相当于挖掘机的手，可以挖土、装土。

液压系统是挖掘机的血管和心脏，它能让挖掘机的各个部件动起来。

电气系统是挖掘机的大脑，它负责控制挖掘机的动作。

四、挖掘机的工作
挖掘机有很多工作，比如挖土、运输土方、清理渣土等。

我们来看一下挖土的过程。

首先，挖掘机的铲斗放在土方上，然后
挖掘机的主机发动，液压系统开始工作，铲斗开始抓挖土方，然后铲斗旋转，把土方倒在需要的地方。

这样，一次挖土的工作就完成了。

五、挖掘机的安全性
挖掘机是一种很大的机械装置，所以在使用的时候要特别小心。

我们在玩具挖掘机的时候也要注意安全。

首先，不能随便触碰挖掘机的机身或铲斗，以免造成危险。

其次，不要在挖掘机作业的地方玩耍，以免被挖掘机误伤。

最后，还要遵守大人的指挥，听从他们的安排。

六、挖掘机的应用
挖掘机有很多应用。

比如在建筑工地上，挖掘机可以用来挖土和清理渣土；在农田里，可以用挖掘机来翻土和整地；在矿山里，挖掘机可以用来开采矿石。

挖掘机在工程中起着非常重要的作用。

七、小小挖掘机工程师
今天我们来做小小挖掘机工程师，你们准备好了吗？我们可以用纸板、彩纸和颜料来做一个属于自己的挖掘机。

首先，用纸板剪出挖掘机的形状。

然后，用彩纸剪出挖掘机的眼睛和铲斗。

最后，用颜料给挖掘机上色。

这样，我们就做出了一个精美的挖掘机。

八、总结
今天我们学习了关于挖掘机的知识。

我们知道挖掘机是一种工程机械，它可以挖土、运输土方、清理渣土等工作。

挖掘机有主机、铲斗、液压系统和电气系统等部件。

挖掘机使用时要注意安全，遵循规则，听从大人的指挥。

挖掘机的应用范围很广，它在许多领域都有很重要的作用。

最后，我们还动手做了一个属于自己的纸板挖掘机。

谢谢大家的聆听！
参考译文：
Hello everyone! Today I'm going to talk to you about a very interesting topic - excavators. Do you know what an excavator is? What can it do?
Excavator is a kind of engineering machinery. It is mainly used for excavation, transportation of earthwork, clearing of slag and other work. The appearance of excavator is a bit like a big monster. It
has two big eyes, as if it is looking at us. And it has a big shovel, which can dig a lot of earthworks. Its arm can also rotate and pour the dug earthworks to the place we want.
Let's take a look at the parts of the excavator. Excavator has main engine, bucket, hydraulic system, electrical system and so on. The main engine is the body of the excavator, which is responsible for providing power to make the excavator work. The bucket is like
the hand of the excavator, which can dig and load earthworks. The hydraulic system is the blood vessels and heart of the excavator,
which can make all parts of the excavator move. The electrical system is the brain of the excavator, which is responsible for controlling the movements of the excavator.
Excavators have many jobs, such as digging, earthwork transportation, slag cleaning and so on. Let's take a look at the process of digging. First of all, the bucket of the excavator is put on the earthwork, and then the main engine of the excavator starts, and the hydraulic system starts to work. The bucket starts to grab and dig the earthworks, and then the bucket rotates and pours the earthworks to the desired place. In this way, a digging work is completed.
Excavator is a very large mechanical device, so we should be extra careful when using it. We should also pay attention to safety when playing with toy excavators. First of all, do not touch the body or bucket of the excavator casually, so as not to cause danger. Secondly, do not play in the place where the excavator is working, so as not to be accidentally injured by the excavator. Finally, we should obey the command of adults and follow their arrangements.
Excavtors have many applications. For example, on construction sites, excavators can be used for digging and clearing slag; in farmlands, excavators can be used for digging and leveling the soil; in mines, excavators can be used for ore mining. Excavators play a very important role in engineering.
Today, let's be little excavator engineers. Are you ready? We can make our own excavators with cardboard, colored paper and paints. First, cut the shape of the excavator out of the cardboard. Then cut
out the eyes and shovel of the excavator with colored paper. Finally, paint the excavator with paint. In this way, we have made a beautiful excavator of our own.
Today we have learned about excavators. We know that excavators are a kind of engineering machinery, which can excavate, transport earthworks, clean slag and so on. Excavators have main engines, buckets, hydraulic systems and electrical systems. When using excavators, we should pay attention to safety, follow the rules and obey the command of adults. Excavators have a wide range of applications and play an important role in many fields. Finally, we also made our own cardboard excavator.
Thank you for listening!。