(para 1—3) Stage 2 : The development of life (para 4—5)
Stage 1: The development of the earth (1) After the Big Bang, what was the earth like? a cloud of dust a solid globe
8 1. Insects and amphibians appeared. 3 3. The earth became a solid ball. 5. Reptiles appeared. 9 7. The earth was a cloud of 2 dust 9. Shellfish and other fish 6 appeared. 11. Clever animals with hands and feet appeared 12 10 2. Dinosaurs appeared. 5 7 4 1 11 4.Small plants grew on the water. 6. Plants began to grow on dry land. 8. Water appeared on the earth 10. The universe began with a “Big Band”. 12. Mammals appeared.
(2) What happened next? exploded with fire and rock produced water vapour and gases
(3) What did the water vapour and gases form?
the earth’s atmosphere
Because they are putting too much carbon dioxide into the atmosphere, which prevents heat from escaping from the earth into space.
The earth may become too hot to live on .
Because water allowed the earth to dissolve harmful gases into oceans and seas.
Stage2 The development of life
1.What life developed after water appeared? small plants appears in water
(4) What appeared as the earth cooled down?
Water appeared
water is important for the beginning of life on the earth.
Why is water so important for the beginning of life?
Can you fill in the blanks? plants animals
sellfish and all 2 sorts of fish
4 insects 5 amphibians
1 small plants in water
3
Green plants on land
6 forests
seagreatbao@
God created the world in seven days
Detailed reading
This text can mainly divided into two stages
Stage 1 : The development of the earth
Comprehension questions
2. What made it possible for life to begin to develop?
Comprehension questions
3. What are the differences between reptiles and mammals?
Group work : describe the video
The earth is becoming hotter and hotter
Discussion
What can we do to prevent the earth from becoming hotter and hotter? Eg. What we can do is to save energy. • What we can do is to…
2.What life developed in water next? Shellfish and all sorts of fish
3.What about the life on land? green plants began to grow on land insects appeared
The small plants in water are considered ____________ to be the earliest lives on the earth. The O2 shellthey supplied encouraged the lives of____ -fish and fish Slowly green plants grew on __________. land, which were followed by __________ land animals like insects & amphibians ________. When the plants grew forests ______ reptilesappeared. Then _______ into______, dinosaurs developed but disappeared later, which made the rise of a totally different animal,______, mammalpossible, and finally _____ spread all over the world. humans
Homework:
1. Finish the exercise 1and 2 on page
63 2. Read the text again and find out your difficult points.
Comprehension questions
1. How was the earth different from the other planets?
7 8 9 10
Bao Xiaoming
reptiles dinosaurs mammals humans
seagreatbao@
Hangzhou Foreign Languages School
Can you put the order of development of life into a time line?
Comprehension questions
4. How did dinosaurs disappear?
人教版必修
3
Unit 4 Astronomy: the science of the stars
reading
How Life Began on the Earth
Pangu separates the sky from the earth
Hangzhou Foreign Languages School
6.What life developed after dinosaurs? mammals on land
7. What life developed after mammals? small clever animals
1.Who are the small clever animals with hands and feet? 2. Are they taking care of the earth well? Why?
summary
• After the “big bang”, the earth was still just a cloud of _______,it dust _______loudly with fire and rock, exploded which were in _____ time to produce the_________, carbon water vapour and other gases. Then ________ water began to appeared on the earth.
Bao
seagreatbao@
The Goddess Nuwa mended the heaven and created human beings from the clay(粘土).
Hangzhou Foreign Languages School
Bao Xiaoming
4. What life developed next on land?
amphibians on land and in the water forests
5.What life developed after forests appeared?
reptiles appeared dinosaur developed