资源简介

(共27张PPT)
Unit 3 Make it happen!
Understanding ideas（1）
英语外研版八年级上册
Learning objectives
通过本节课的学习，学生能够：
1. 认读并运用“artificial arm、3-D printer、invent”等词汇描述
Easton 发明事件。
2. 读懂Easton发明事件的语篇，并能提取语篇中的关键信息，准
确完成事件排序和图表填空。
3. 理解科技发明对改善他人生活的意义，认同创新与公益结合的
价值，增强自身社会责任感。
重点
重点
···
Look and say
fair
block
brain
signal
artificial arm
invent
improve
3-D printer
What do the pictures show
What’s the word or expression for each picture
Look and predict
Look at the word cloud and predict. What’s the passage about
Maybe it’s about inventing artificial arms to give a helping hand in life.
Read and answer
Read quickly and answer the question.
What’s the main idea of the passage
It’s about Easton inventing artificial arms to help Jenny and other people in need.
Read and order
Order the following events in the passage.
1
Easton made a robotic arm with plastic blocks and fishing line.
Easton allowed people to use his design for free.
Easton and Jenny met at a science fair.
Easton made an artificial arm with a 3-D printer.
2
4
3
Read and complete
Complete the chart with the words and expressions from the passage.
Where: At a(n) 1 ______________
Who: Jenny, a girl born 2 ______________
Problem to solve: Jenny’s artificial arm cost $80,000. But children like her 3 ______________, so they always need new arms.
science fair
without an arm
How did Easton come up with the idea
grow quickly
Look and say
Age 14: A robotic arm. It was made from plastic blocks and 4 ______________.
Age 16: An artificial arm. It could 5 ________ with brain signals, but weighed 3.6 kilograms.
Age 23: Another artificial arm. It 6 ___________ just 0.5 kilograms and 7 ________ around $500.
fishing line
move
What are Easton’s inventions
weighed
cost
Complete the chart with the words and expressions from the passage.
Read and complete
Read and complete
Look and say
He decided to post his 8 _________ online for free. People could make an artificial arm with their own 3-D printers.
design
What did Easton do with his invention
Complete the chart with the words and expressions from the passage.
Read and complete
Read and complete
Look and say
Read and answer
Why did Easton shift from “making a robot arm for fun” to “devoting himself to helping Jenny” What qualities does this show
This was the first time Easton met Jenny, a girl with a special condition. She was born without an arm. Her artificial arm was just a simple hook, but it cost $80,000. What’s worse, children like her grow quickly and need new arms all the time.
“It blew me away! I built my arm for only $300,” thought Easton. “I must lend a hand to people like her.”
Easton was moved by Jenny’s situation and wanted to help. It shows compassion and a sense of responsibility.
Look and say
Read and answer
What problems did Easton solve each time
How long did it take Easton to improve the artificial arm to make it a good-enough one
After the fair, Easton’s room became a lab. He stayed there all day. He always tried to improve his work. For his 16th birthday, Easton got a 3-D printer. And with it, he invented an artificial arm. It was able to move with brain signals of the user. But it wasn’t good enough yet: the arm weighed 3.6 kilograms. It was too heavy for a child.
Easton kept working on it. He enjoyed fixing problems one after another. And finally he hit on success at age 23. His design only weighed 0.5 kilograms and cost around $500!
Read and answer
What problems did Easton solve each time
First, he made an artificial arm which can move with brain signals of the user; later, he reduced its weight.
How long did it take Easton to improve the artificial arm to make it a good-enough one
Seven years.
Look and say
Read and answer
What did Easton decide to do with his artificial arm design
Why did Easton make his design free instead of making money from it
What does “What a helping hand!” in the last paragraph refer to
Easton’s invention has helped many children. He didn’t want to make money from it. He decided to post his design online… for free! People can download the design and make an artificial arm with their own 3-D printers!
What a helping hand!
Look and say
Read and answer
What did Easton decide to do with his artificial arm design
He decided to post his design online for free.
Why did Easton make his design free instead of making money from it
Because he wanted to help many children with his invention.
What does “What a helping hand!” in the last paragraph refer to
It refers to Easton’s helpful artificial arm invention and his generous act.
双关（Pun） 是利用词语的多义性或同音异义，使一个词语、短语、句子等同时具备两种或多种含义，在特定语境中产生巧妙的语义关联，达到幽默、含蓄、强调等表达效果。从字面看，“helping hand” 可以指 “帮助性的手（即假臂本身）”。从引申意义看，又有 “援手、帮助行为” 的意思 ，指Easton这种乐于助人的行为。
Listen and read
Listen and read the passage.
Look and say
Think and share
1 How would Jenny’s life change with Easton’s invention
Jenny’s life would be much easier. She can do more activities and the artificial arm looks better than a hook. It is also cheaper, so her family can save more money.
Learning to think for question 1
To understand the influence of something, you can compare the situation before and after the use of it.
Look and say
Think and share
2 What can you learn from Easton
From Easton, I learn that creativity and persistence can solve problems. By sharing his design for free, he teaches me that technology should help everyone, not just those who can pay.
Draw and introduce
Can you think of a simple “helping hand” invention for daily life Draw it and introduce it in English.
Language points
1. Her artificial arm was just a simple hook, but it cost $80,000.
她的假肢只是一个简单的钩子，但花了8万美元。
cost v. 花费；价值
[辨析]
（1）cost 主语通常是“物”或者“事”，常见搭配是 “sth. cost (sb.) + 金钱”，意思是“某物花费（某人）多少钱”。
* The new iPhone costs me 8,000.
这部新 iPhone 花了我8000元。
Language points
（2）spend 主语是“人”，常见搭配：“spend + 时间 / 金钱 + on + 事物”； “spend + 时间 / 金钱 + (in) doing sth.”。
* She spent 2,000 on clothes last month. 她上个月买衣服花了2000元。
* I spent two hours (in) finishing my homework.
我花了两个小时完成作业。
（3）pay主语一般是“人”，常见搭配：“pay + 金钱 + for + 事物”，表示“为某物支付多少钱”；“pay sb. +金钱”，意思是“付给某人多少钱”。
* I paid 50 for this book. 我花50元买了这本书。
* The boss pays us every Friday. 老板每周五给我们发工资。
Language points
（4）take 多用“it”作形式主语，真正的主语是后面的动词不定式 “to do sth.”。即： “It takes sb. + 时间 + to do sth.” “做某事花费某人多长时间”。
* It took me 30 minutes to drive to work. 我开车上班花了30分钟。
* It will take a week to prepare for the exam. 准备这次考试需要一周时间。
[拓展]
cost 作名词，意为“成本；费用；代价”。
* We need to reduce production costs. 我们需要降低生产成本。
* Success often comes with a high cost. 成功往往需要付出高昂的代价。
Language points
2. I must lend a hand to people like her. 我必须帮助像她这样的人。
lend v. 帮助(某人)做事；(给某人)搭把手
[用法]
强调通过提供资源、力量或时间协助他人完成某事，通常搭配具体的动作或事物，常见结构为：lend + 某人 + a hand/help + (with/doing sth)
* Can you lend me a hand with the groceries
你能帮我搬一下杂货吗？
Language points
[辨析]
（1）lend “借出”。结构：lend sth. to sb. 或 lend sb. sth.
* I lent my book to Tom/lent Tom my book. 我把书借给了汤姆。
（2）borrow “借入”。结构：borrow sth. from sb.
* He borrowed money from his friend. 他向朋友借了钱。
（3）keep 指保留借来的东西一段时间。
* You can keep the book for a week. 这本书你可以借一周。
Language points
3. He enjoyed fixing problems one after another.
他喜欢一个接一个地解决问题。
fix v. 修理
[辨析]
（1）fix 指通过调整、安装、紧固等方式解决问题，使事物恢复正常运作或处于合适状态。不仅限于实物，也可用于抽象事物（如问题、关系等）。
* Look! The worker is fixing the street lamp. 看！工人正在修理路灯。
Language points
（2）mend 侧重“修补破损的物品”，尤其是通过针线、胶水等手工方式修复，使其恢复完整。常用于衣物、织物、纸张或较小的物品，也可指愈合伤口或修复人际关系。
* My grandmother taught me how to mend clothes. 祖母教我如何缝补衣服。
（3）repair 指对损坏、故障或破旧的事物进行系统性修复，通常需要专业技能或工具，涉及更换零件、修复结构等。多用于机械、建筑、车辆等较大或较复杂的物体。
* We need to hire a professional to repair the leaking roof.
我们需要雇专业人员来修漏水的屋顶。
I. 根据句意及首字母提示完成单词
1. I love visiting different f_______ (展览会) to explore unique products.
2. The floor was made of wooden b_______ (块).
3. The diamond ring she wore was a_______ (人造的), not a real one.
4. Please hang your coat on the h_______ (挂钩).
5. Excuse me, Mum. Can you l_______ (搭把手) a hand
Practice
airs
locks
rtificial
ook
end
Homework
1. List the key steps of how Easton invented the artificial arm with expressions or simple sentences.
2. Design a poster for Easton’s free artificial arm.

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