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第10课

2021-6-12 14:54| 发布者: admin| 查看: 103| 评论: 0

摘要: .
 

第三单元

Unit 3

生物的生长与繁殖

 Growth and reproduction of organisms

第十课

Lesson 10

种子发芽了

The seeds germinated

1.一粒种子是怎样长成一株植物的 ?它的生长过程是怎样的

How does a seed grow into a plant? How does it grow?

准备聂子,放大镜、小刀 、瓷盘 、纱布

Prepare Nie Zi, magnifying glass, knife, porcelain plate and gauze.

搜集大豆 、玉米 、花生等种子

Collect seeds of soybean, corn and peanut.

春天来了 ,落在土壤里的种子开始萌芽了 ,这说明了什么

Spring is coming, and the seeds that fall in the soil begin to sprout. What does that mean?

我们一起研究吧

Let's study it together.

2.选择几粒在水中浸泡过的种子 ,观察 、研究他们的构造。

Select a few seeds soaked in water to observe and study their structure.

画出种子的各部分

Draw the parts of the seed

3.种子发芽

seed germination

种子发芽需要什么条?

What strips do seeds need to germinate?

可能与水有关

It may be related to water.

我认为 ……

I think

 根据猜想 ,制定我们的实验方案

According to the conjecture, we made our experiment plan.

其他条件必须相同才可以

Other conditions must be the same.

研究种子发芽与水的关系,可以进行对比研究

The relationship between Seed Germination and water can be studied comparatively.

实验目的 :研究种子发芽与水的关系

Objective: To study the relationship between Seed Germination and water.

观察对象 :大豆种子

Participants: soybean seeds

不同条件 :一号种子放在有水环境中 ,二号种子放在无水环境中。

Different conditions: No.1 seed was put in water environment, No.2 seed was put in water environment.

观察记录

Observation record:

大豆种子  

Soybean seed

           1 

No.1

        2

No.2

第一天   

   first day     

第二天

the second day

这是我制定的方案

This is my plan.

做实验 ,观察种子发芽

Do experiments and observe seed germination.

有水环境中的大豆

Soybean in water environment

无水环境中的大豆

Soybean in waterless environment

这是我做的对比实验

This is my comparative experiment.

把发芽的种子种在花盆里 ,继续观察

Plant the germinated seeds in a flowerpot and continue to observe.

持续观察植物的生长,你会有更多的发现

Keep looking at the growth of plants and you will find more.

4.交流我们的研究成果

Share our research results.

就是我画的种子构造图

That's the seed structure I drew,

种子发芽需要水

Seeds need water to germinate.

通过实验我发现种子发芽需要空气

Through experiments, I found that seeds need air to germinate

这是我观察到的

This is what I observed.

5.查阅资料 ,了解辣椒种植的基本方法

Access to information, understand the basic methods of pepper planting.


鲜花

握手

雷人

路过

鸡蛋
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