资源简介

(共27张PPT)
Unit 5 The Power of Plants
Starting out
英语外研版七年级上册
通过本课时学习，学生能够：
1.激活和植物有关的知识，了解植物的有趣知识，初步感知植物的奇妙之
处，激发对植物的兴趣；
2.归纳总结植物在人类生活中的作用，初步感知植物与人类的关系；
3.准确描述自认为最神奇或最有用的植物，并阐释理由。
Learning objectives
重点
重点
Look and answer
1. What is happening in the picture
2. How does it make you feel
A plant is breaking through the ground.
Powerful/Aamazing/Hardy/Surprising...
Let’s explore the amazing world of plants.
Look and answer
Watch and answer
What amazing facts about plants are mentioned in the video
Watch and answer
What amazing facts about plants are mentioned in the video
Plants are everywhere, even in space.
Some bamboo can even grow 91 centimetres in just one day.
People began to grow their food over 10,000 years ago.
People use different plants to make medicines.
Venus flytrap (捕蝇草)
Eating Bugs (昆虫):
There is a plant called Venus flytrap that eats bugs. It has a special mouth that closes when a bug lands on it.
Think and say
What other facts do you know about plants
Think and say
Making Babies:
Plants can make babies in two ways. They can make seeds, which are like tiny babies that grow into new plants. Or they can just grow a new part that becomes a new plant.
What other facts do you know about plants
Talking to Each Other:
Plants can send messages to each other through the dirt(泥土) to warn about danger.
Think and say
What other facts do you know about plants
Think and say
Drinking Straws (吸管):
Plants have tubes(管状物) that are like straws. They use these to drink water from the ground.
What other facts do you know about plants
Think and say
What other facts do you know about plants
Friends with Fungi(真菌):
Plants have friends called fungi that live in the dirt. These fungi help the plants get food.
High and Low:
Plants live in many places. Some live in the tallest trees, and some live under the ground.
Think and say
What other facts do you know about plants
There are so many cool things to know about plants!
Let’s talk
—Which fact interests you the most
—The fact that plants can eat bugs interests me the most.
Let’s explore
This is the largest flower in the world.
Diameter(直径): 1.4 meters
Weigh: 10 kilograms
This is the smallest seed and flowering plant in the world.
Long: over 1 mm
Wide: less than 1 mm
Amazing plants
There are many amazing plants in the world. Do you know them
This kind of tree contains strong toxicity(毒性).
Snowdrops can bloom in temperatures as low as minus 50 degrees Celsius(零下50摄氏度) and have a very strong tolerance(耐力) to cold.
Let’s explore
Amazing plants
There are many amazing plants in the world. Do you know them
Wheat flower is the flower of wheat, an important food crop(庄稼) in the world.
It has a very short flowering period(周期), usually only opening for 5 to 30 minutes.
It takes about 2 to 3 days for the whole year to bloom and finish.
Let’s explore
Amazing plants
There are many amazing plants in the world. Do you know them
Look and say
What are the people doing
The girl is buying some vegetables.
The man is working on wood.
Look and say
What are the people doing
The man and the woman are weighing the herbs.
The girl is drawing trees and grass.
What can plants do for us
Plants can be our food, medicine, materials for houses and inspiration for painting.
Look and say
Brainstorm
What else can plants do for us
Read and tick
What can plants do for us
Breathing: Plants help us breathe. They take in CO2 and give us O2.
Beauty: Plants make the world look pretty with their flowers and
green leaves. They can also help us relax and feel happy.
Cleaning: Plants can help clean the air by taking in pollutants(污染物)
and giving out clean air.
Energy: Some plants can be turned into biofuels(生物燃料) which are
used to power cars and machines.
Clothes: Plants like cotton can be turned into clothes.
Paper: Trees are used to make paper, which we use for books, newspapers, and painting.






Summarize
What can plants do for us
food
Plants
energy
paper
clothes
breathing
cleaning
materials for houses
beauty
...
medicine
Plants are our friends that help us in many ways! They are useful!
Summarize
Discuss and share
Do you think plants are amazing/useful
Which plants do you think is the most amazing/useful
Why or why not
Plants Reasons
Most amazing plant
Most useful plant
Discuss and share
Plants Reasons
Most amazing plant
Most useful plant
We think plants are amazing and useful. The most amazing plant is ... because ... The most ... because ...
Summary
After learning this lesson, I can
...
1
2
3
understand some interesting facts about plants.
describe what plants are used for.
explain why plants are amazing/useful.
The largest.../The smallest.../The plant can eat.../The plant can talk.../...
food/medicine/materials for houses/paper/cleaning/...
Plants are super useful to people in many ways...
Homework
1. Explain what plants are used for in our lives to
your friends.
2. Design a poster to show plants are amazing.

展开更多......

收起↑