Learning about Languageppt课件课堂实录

Mysteries of the First Humans教学设计

万全区万全中学

黄佳聪

外刊选文原文(摘编自:http://www. livescience. com)：

Humans are unique among life on this planet, and there are many 1

mysteries about us.

1. Why did we grow large brains? There is no question that our large brains have given us a very big advantage in the world. The human brain takes up only about 2 percent of the body's mass, yet uses more than a fifth of the body's energy. But until about 2 million years ago, none of our ancestors had a brain larger than an ape's when compared to body size. So what made us have a larger brain? One possibility is that increased smarts helped our ancestors make better tools. Another is that larger brains helped us interact better with each other. 2. Why do humans walk on two legs? Our ancestors developed upright well before our large brains or stone tools even appeared. The question, then: Why stand and walk on two legs when our ape cousins get by on four limbs. Walking with two legs might actually use less energy than movement on all fours does. Freeing up the arms might also have enabled our ancestors to carry more food. Standing upright might even have helped them control their temperature better by reducing the amount of skin directly exposed to the sun. 3. What happened to our hair? Humans are unique for looking naked compared to our hairier ape cousins. So why did this nakedness happen? One suggestion is that our 2

ancestors shed hairiness to keep cool in hot Africa. Another is that losing our fur coats helped stop some diseases. 4. Where do modern humans come from? The out-of-Africa hypothesis maintains that modern humans evolved relatively recently in Africa and then spread around the world

Notes：

I. unique

adj.独一无二的

2. smarts

n. 智慧

3. four limbs

四肢

4.naked

adj. 裸露的

5. shed

v.

脱落

6. assumption

n.假设

7. evolve

v.进化

Task：

True(T)or False(F) (

)1. More than 20% of our body's energy is used up by our brain (

)2. Humans started to walk with two legs after learning to make tools (

)3. It might be the hot weather that made humans begin to shed the heavy fur.

3

拓展阅读

What

will

humans

look

like

in

1,000

years?

What will humans look like in 1, 000 years? Video suggests we could develop red eyes, have darker skin and be betterlooking. Climate change, artificial intelligence and genetic mutations(基因突变) are all set to transform（改变）

our bodies. In the future tiny robots will be suddenly put into our own bodies, improving our abilities. Meanwhile, designing babies will cause future generations to grow increasingly intelligent and attract people. But while that will make us smarter ,stronger and betterlooking, such genetic similarity, or lack of human diversity leaves room for a single new disease of the future to wipe out the entire human race. As global warming takes hold, humans will also be skinnier and taller, as this body shape is better able to dissipate (驱散; 使消散)heat. Our faces may also change greatly. according to Dr. Alan Kwan, who holds a PhD in computational genomics(计算的基因组学) from Washington University in St Louis. Dr. Kwan has created a shocking series of images which show one possible evolution for the human race over the next 100,000 years. As genetic engineering becomes normal. "the fate of the human face will be increasingly determined by human tastes, " writes Dr. Kwan, while foreheads will continue to expand as our brains continue to grow larger. As man achieves total control over genetics, the human face will become heavily biases（偏见的）towards features that humans find fundamentally appealing(吸引人的): strong lines, straight nose and deep eyes Dr. Kwan believes eyes will grow very large as the human race colonizes（开拓殖民地）the solar system and people start living in the dimmer(暗淡的) environments of colonies further away from the sun. 1.What will happen in 1, 000 years according to the text? A. Humans will become less beautiful. B. Humans will stay away from all diseases. C. Robots will replace humans in many areas. D. Humans will have higher abilities than now. 2. According to Dr. Alan Kwan, in 100, 000 years A. humans will have the ability to control the solar system. B. humans foreheads will become as large as their brains. C. humans will gain richer knowledge about genetics. D. humans faces will be skinnier and longer. 3.Why will the future humans have bigger eyes? 4

A. To adapt to the lack of sunlight. B. To adapt to the change of climate. C. To adjust to their larger foreheads. D. To make themselves more beautiful. 主题：人与环境（自然）

指导思想与理论依据：

普通高中英语课程标准(2017年版)》指出,“高中英语课程应充分发挥课程的育人功能。发展学生的语言能力、文化品格、思维品质和学习能力等英语学科核心素养。”在主题意义引领下,以语篇为依托,整合性地学习语言知识和文化知识,通过学习理解、应用实践、迁移创新等一系列促进语言、文化、思维融合发展的活动,帮助学生以主动、合作、探究的学习方式,运用所学语言知识和听说读写看等语言技能,以及多种学习策略,获取文化识,理解文化内涵、比较文化异同,汲取文化精华,发展逻辑思维、批判思维和创新思维,涵养内在精神,指向知行合一;使绕主题意义的探究活动逐步从基于语篇的学习走向深入语篇和超越语篇的解决问题的过程,实现从知识向能力,能力向素养的转化,把英语学科素养的育人目标落到实处。

教学内容分析：

本文内容与Book3Unit4 “The development of live”和Book4Unit1“A student of African wildlife”有关，全文以问答的形式探讨了早期人类的一些秘密。

学习者分析：

万全区万全中学高一321班学生

Teaching material:

Mysteries of the First Humans

5

Teaching objectives：

The teacher is supposed to help the students to

---understand and use some new words and expressions；

---comprehend the texts about the mysteries of the First Humans;

---learn to answer some mysteries of the First Humans ; Teaching focus: ---Provide opportunities for students to practice using new words and expressions

---Help the students to answer some mysteries of the First Humans by using new words and expressions ---Guide the students to develop their ability of solving problems Teaching aids: Multimedia Teaching methods: Communicative teaching method; Situational teaching method Teaching difficulties:

---How to combine the learning of new words and expressions with their application in real situations ---How to guide the students to understand some mysteries of the First Humans Teaching procedures: Step 1:lead in Task 1:Ask students whether they have known the English test paper of 6

2018 and tell them the sources of the reading materials. Task 2:Let students scan some foreign websites Task 3:Choose one text to learn Step 2:Scanning Task 1:As humans, do you like your appearance? Which part do you like best when compared with the First Humans ? Task 2: Ask students to read the text carefully and fill the following blanks based on the context. 1.

The human brain takes up only about 2 percent of the body's mass. 2.

But until about 2 million years ago, none of our ancestors had a brain larger than an ape's when compared to body size. 3.

Standing upright might even have helped them control their temperature better by reducing the amount of skin directly exposed to the sun. 4.

modern humans evolved relatively recently in Africa and then spread around the world. 5.

Our ape cousins get by on four limbs. Step 3:Detailed reading Ask students to read the text carefully and answer the following questions based on the context. 1.

Why human's brains are larger than ape's when compared to their body size? 7

2.

Why losing our fur coats helped stop some diseases?

Step 4:Post reading Discussion: What

will

humans

look

like

in

1,000

years?

Step 5:Homework Write a short passage about future humans after class.

8