Unit 3 Conservation Viewing Workshop课件(共21张PPT) 北师大版(2019)选择性必修第一册

(共21张PPT)
Unit 3
CRAZY BRIDGES FOR ANIMALS
To view and talk about how human activities can affect animals’ behaviour
To view for understanding
To summarise information
To express innovative ideas that may help animals cross human barriers
Why did the chicken cross the road
This is a well-known joke in English and that the response is “To get to the other side.”
We may never know since she’s probably never got to the other side.
Why is says “she’s probably never got to the other side”
Do you think human activities can affect animals’ behavior If yes, how Give some examples.
1
Watch Part 1 of the video. Tick ( ) the human-made things that affect animals’ lives.
2
This video presents different barriers animals face when living in human-built environments, and also offers some solutions.
roads
underpasses
pipelines
footbridges
painted lines
clear-cut corridors
high-tension power
lines
roads of rocks
flatten v. to become or make sth. become flat or flatter 压扁
confront v. to deal with sth. or to face sth. 使遇到，使面对
infrastructure n. the basic systems and structures that a country or organization needs in order to work properly, for example roads, railways, banks etc 基础设施
obstacle n. an object which blocks your way 障碍物
steer clear deliberately avoid 躲开, 避开
ultraviolet adj. of or using electromagnetic waves that are just shorter than those of violet light in the spectrum and that cannot be seen 紫外线的（缩写为UV）
stranded adj. unable to move from the place where they are (人或交通工具) 被滞留的; (船)搁浅
Read the statements. Then watch Part 2 of the video. Write T (true) or F (false).
3
( ) 1. It’s not likely for humans to get rid of roads, power or pipelines now.
( ) 2. High-tension power lines, as well as clear-cut corridors, pipelines, rows of rocks and painted lines on the ground do no harm to animals.
( ) 3. Even if the barbed wire fence is removed, its stopping power can stick around.
2. High-tension power lines, as well as clear-cut corridors, pipelines, roads of rocks and painted lines on the ground do no harm to animals.
These human-made things can affect animals’ lives. They can make animals isolated. If enough animals become isolated, entire populations can dwindle and even disappear.
1. It’s not likely for humans to get rid of roads, power or pipelines now.
“One solution is to get rid of these obstacles, but we aren’t likely to give up roads, power of pipelines anytime soon.”
3. Even if the barbed wire fence is removed, its stopping power can stick around.
“Even we remove physical barriers, their stopping power can stick around.”
dwindle v. to become gradually less or smaller
逐渐减少, 缩小, 变小
get rid of to throw away 丢掉，摆脱
barbed wire wire with short sharp points on it 带刺铁丝
In the final part, the speaker introduces some bridges which animals can use to cross the obstacles. Watch and match the animals with their possible bridges.
4
Deer
Fish
Crabs
Elephants
Monkeys
Overpasses
Underneath
Salmon cannons
ingenuity n. skill at inventing things and thinking of new ideas 心灵手巧，善于创造发明
Salmon Cannon 鲑鱼炮
Watch the whole video. Read the first part of statement below and find a suitable ending from the box on the right to make each statement complete.
5
Unintentional fences that may look harmless to us
If many animals are stranded on one side,
Even when we remove physical barriers,
a. animals still won’t cross the divide.
b. they will become isolated from food, mates and protection.
c. are some of the most effective animal barriers.
Do you think these bridges are good enough for animals Can you come up with some other innovative ideas that may help animals cross the barriers
6
Discuss in groups some of the problems different animals face due to human construction and possible solutions.
Use your imagination and problem-solving skills to come up with different solutions.
Think as many solutions as you can and write them down.