陈雷英语 › ›科学› 五年级下册 › 查看内容

第4课

2021-6-12 14:49| 发布者: admin| 查看: 100| 评论: 0

摘要: .

第四课

Lesson 4

脑与神经

Brain and nerve

1.做几个小实验，说一说自己的体会。

Do a few small experiments and talk about your experience.

实验提示

Experimental tips

研一枚硬币的外轮廓在一张纸的不同位置画6个圆。

Grind the outline of a coin and draw six circles at different positions on a piece of paper.

Mark these circles with numbers 1-6 at will.

l 再次拿起硬币，按照数字顺序依次摆放在这几个圆上。

Pick up the coins again and place them on the circles in numerical order.

实验提示

Experimental tips

l 一个人任意说出一种人体器官的名称，另一个人迅速指出其位置。

One person names a human organ at will, and the other quickly points out its location.

实验提示

Experimental tips

l 手指于尺子的零刻度线持平，准备捏住尺子。

Keep your finger level with the zero mark of the ruler, ready to hold the ruler.

记录尺子掉下时捏住的刻度，这个距离可以说明自己的反应速度。

Record the scale you hold when the ruler falls. This distance can indicate your reaction speed.

（1）说说自己的体会

Talk about your experience

2.认识脑与神经。

Understand the brain and nerves.

脑是人体的“司令部 ”，主管人体的一切活动。神经是人体的“电话线 ”，能把人体各部分获得的信息及时报告给脑。并能把脑下达的命令传达给人体各部分。

The brain is the "headquarters" of the human body, in charge of all activities of the human body. Nerve is the "telephone line" of the human body, which can timely report the information obtained by various parts of the human body to the brain. And it can convey the commands from the brain to all parts of the human body.

脑，脊髓，神经

Brain, spinal cord, nerve

感觉中区，听觉中区，运动中区，视觉中区

Middle sensory area, middle auditory area, middle motor area, middle visual area

3.当人的某一器官失去功能时，想象一下会是什么样子。试着体验一下。

When one organ of a person loses its function, imagine what it would look like. Try to experience it.

4.长时间读书，写字，思考问题，常会感的头晕，头痛或头脑不灵活。这是为什么？怎样做的科学用脑？

Long time reading, writing, thinking, often feel dizzy, headache or brain is not flexible. Why? How to use brain scientifically？

单元评价

Unit evaluation

我与同学的合作

My cooperation with my classmates