资源简介

(共18张PPT)
(-Hit it big&Let's explore!)
Let's review
Solution
There is a phone arm.
Problem
Some people in wheelchairs cannot get public phones.
Let's review
Solution
There is a leaf collector.
Problem
There are some leaves on
the street.
Let's review
Solution
There is a watering bottle.
Problem
No one will water the plants
during the holiday.
Let's review
Solution
There is a bird feeder.
Problem
Birds don't have much food on cold days.
Think and say
Who invented these things
Little inventors
Task 1:Work in groups and answer
What are
the problems
Look and say
What are the problems
There is lots of cat
hair on the floor .
We can’t use all the toothpaste.
Look and say
What are the problems
There is too much mixed rubbish to recycle.
Pets often knock
down flowerpots.
Task 2:
Choose one problem.Think and share.
What problem do you want to solve
How will your invention solve the problem
How are you going to make it
We want to solve the Problem 3.
We will invent a rubbish picker.It will pick the rubbish.
First,...Next,...Then,...Last,...
Task 3:Design your invention.
What do you need to make it
sticks
bottle caps
pushpins
We need these things to make a rubbish picker.
Task 4:
Write the steps
and make your invention.
Connect the sticks with pushpins.
Prepare sticks for two long arms.
Cut a hole in the middle
of two bottle caps.
Glue the bottle caps to both ends.
Task 5:
Tell the class about your invention
We want to solve the Problem 3.
This is our rubbish picker.
We use sticks, bottle caps,pushpins.
First,connect the sticks with pushpins.
Next,prepare sticks for two long arms.
Then,cut a hole in the middle of two bottle caps.Last,glue the bottle caps to both ends.
What's this
Look and say
It's one of the world-changing inventions
(改变世界的)
Who do some people in China think invented the wheel
Read and answer
Huangdi, or the Yellow Emperor.
Why is the wheel a world-changing invention
Read and answer
It helps people solve many problems and makes life easier for us.
Who invented it and how
Work in pairs
How did it change the world

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