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(共36张PPT)
Unit 3
Unit 3
Make it happen!
A helping hand
能够发现并描述一个日常生活中的问题。
能够介绍一个发明创意，解决此问题。
能够描述发明的工作原理。
fair
artificial
block
n. 展览会
n. 一块
（木头、石头等有直边的硬物）
adj. 人造的，人工的
At the science fair, my project used a small block of artificial wood to demonstrate how to build eco-friendly furniture.
在科学展览会上，我的项目用一小块人造木头来演示如何制作环保家具。
condition
n. 长期疾病
cost
v. 价格为，需支付
lend
v. 借给，借出
lend (sb) a hand
帮助（某人）做某事
Because of his heart condition, the new medicine cost him a lot of money, so his friend offered to lend him some cash.
由于他的心脏病，新药花费了他很多钱，所以他的朋友主动借给他一些现金。
3-D
adj. 三维的，立体的
printer
n. 打印机
invent
v. 发明，
创造
Scientists used a 3-D printer to invent a special tool that helps disabled people.
科学家们用3D打印机发明了一种帮助残疾人的特殊工具。
invention
n. 发明
weigh
v. 重，重量是……
kilogram
n. 千克，公斤
fix
v. 解决（问题）
download
v. 下载
The engineer had to weigh the parts to make sure they were under five kilograms, fix the software bug, and download the update to solve the problem.
工程师必须称重这些零件以确保它们低于五公斤，修复软件漏洞，并下载更新来解决问题。
What can you see in the pictures
What are they doing
What technological inventions do you use every day
I often use ... My favorite is … because I can ...
Look at the word cloud and predict what the passage is about.
Which words are new to you
Do these words have any relationship with each other
These words relate to invention and problem-solving.
Can you use the key words to describe what the passage is about
I think the passage is about someone who invented an artificial arm. He or she designed it to improve people’s lives by lending “a helping hand”.
Look at the picture and title, and answer:
— Where was the boy
— He was at/ in a(n)…
— What was he doing at that moment
— He was…
What was in the boy’s hand
Read the passage and check your answer.
— Where was the boy
He was at a science fair.
— What was he doing at that moment
He was showing his work.
— What was in the boy’s hand
There was a robotic arm in his hand.
An event where students make projects to show science ideas
What is the passage mainly about
It’s mainly about how Easton has helped people with his invention, an artificial arm.
man-made
Order the following events in the passage.
______ 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.
1
2
3
4
What is 3-D
3-D means “three-dimensional(空间的)”. It describes objects that have three measurements: length, width, and depth.
For example, a drawing of a square is flat and has only length and width — that’s 2-D. But a real box has depth, too. You can touch it, turn it, and see it from all sides. That’s 3-D.
We see the world in 3-D because our two eyes work together to help us sense depth. This helps us tell how far away things are.
Complete the reading chart with the words and expressions from the passage.
Where: At a(n) __________
Who: Jenny, a girl born _____________
Problem to solve: Jenny’s artificial arm cost $80,000. But children like her ___________, so they always need new arms.
How did Easton come up with the idea
science fair
without an arm
grow quickly
Age 14: A robotic arm. It was made from plastic blocks and __________.
Age 16: An artificial arm. It could __________ with brain signals, but weighed 3.6 kilograms.
Age 23: Another artificial arm. It _______ just 0.5 kilograms and ________ around $500.
What are Easton’s inventions
What did Easton do with his invention
He decided to post his _______ online for free. People could make an artificial arm with their own 3-D printers.
fishing line
move
weighed
cost
design
How many parts can the article be divided into
How did Easton come up with the idea
What are Easton’s inventions
What did Easton do with his invention
What was Easton’s work at the science fair What was it made of
It was a robotic arm. It was made of plastic blocks and fishing line.
How did Easton feel when he knew about Jenny’s artificial arm What did he decide to do
Easton felt surprised. He decided to lend a hand to people like her.
Answer the questions.
What did Easton do after the fair
He always tried to improve his work. He invented an artificial arm with a 3-D printer and kept working on it. He enjoyed fixing problems one after another. And finally he hit on success.
to repair something broken or solve something wrong
to become successful
Was Easton pleased with his first artificial arm Why or why not
On one hand, Easton was pleased with it because the arm was able to move with brain signals of the user. But on the other hand, he thought it wasn’t good enough because it was too heavy for a child.
What did Easton do with his successful artificial arm Why did he do so
He posted his design online for free. He just wanted to help people in need.
1. Easton made a robotic arm with plastic blocks and fishing line.
2. Easton and Jenny met at a science fair.
3. Easton made an artificial arm with a 3-D printer.
4. Easton allowed people to use his design for free.
Retell the events.
Event 1: Before the science fair, Easton made a robotic arm with plastic blocks and fishing line.
Event 2: Then Easton went to the science fair with the robotic arm and met Jenny, a girl without an arm. At that moment, he decided to lend a hand to people like Jenny.
Event 3: After the fair, Easton tried to improve his work. He invented an artificial arm with a 3-D printer, but it was too heavy. Then he kept working on it. At the age of 23, he hit on success.
Event 4: Finally, Easton decided to post his design online. He allowed people to use it for free.
How would Jenny’s life change with Easton’s invention
Learning to think for question 1
To understand the influence of something, you can compare the situation before and after the use of it.
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.
Creativity and persistence can solve problems.
By sharing his design for free, he teaches us that technology should help everyone, not just those who can pay.
Be creative and persistent.
Share to spread love.
2. What can you learn from Easton
3. What a helping hand! What does “a helping hand” really mean
2) His action and kindness. Easton posted his design online for free to help more people. Easton is helpful to others.
1) His invention.
To make comments about a person, always look for what they do. Actions speak louder than words.(事实胜于雄辩).
Think of a problem and come up with an idea for an invention.
Your problem
How
What invention
What problem do you face
How does the problem trouble you
What invention could solve the problem (Be creative! You can be as imaginative as you want.)
How
How does the invention work
根据提示补全单词。
There was an Chinese book _______ (展销会) in the library last Sunday.
Running is good for health and it ________ (支付) nothing.
We should always _______ (搭把手) a helping hand to those in trouble.
When we meet with problems, we should try to _______ (解决) them by ourselves.
People _______ (发明) many things almost by accident.
fair
costs
lend
fix
invented
II. 用所给词汇的适当形式完成句子。
The _______ (print) has become one of the most useful machines in the office.
I _______ (lend) my bike to Jane, but she hasn’t returned it to me.
The bridge is strong enough to hold the _______ (weigh) of many cars.
The ball is small but it weighs about 5 ________ (kilogram).
Some new _________ (invent) will be on show at the science museum in two months.
printer
lent
weight
kilograms
inventions
III. 根据汉语意思完成句子。
更糟糕的是，快下雨了。
_______ _______, it’s going to rain.
2. 在中国，当我们第一次遇见人时，我们应该握手。
We should _______ _______ _______ each other when we meet someone _______ _______ _______ _______ in China.
3. 好朋友不但和你一起玩，而且会一直帮助你。
A good friend not only plays with you, but helps you _______ _______ _______.
What’s worse
shake hands with
for the first time
all the time
4. 这个城市的所有公园和博物馆都免费向公众开放。
All the parks and museums in this city are open to the public _______ _______.
5. 通过多年努力，我们的团队终于取得了成功。
Our team finally _______ _______ _______ through many years’ hard work.
6. 这个故事太精彩了，简直让我震惊。
The story was so amazing that it just _______ _______ _______.
for free
hit on success
away
blew me
Do you know the meanings of these words and expressions
I CAN
能够发现并描述日常生活中的问题。
能够介绍一个发明创意，解决此问题。
能够描述发明的工作原理。
Review what you have leant in this lesson.
New words and expressions.
Read the passage.
Make a poster about an invention.

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