(共22张PPT)
welcome
Insects
昆虫约出现于3.5亿年前,经历了漫长的演化过程。
人类已知的昆虫约有100万种。
昆虫是动物界中最大的一个类群。
它们的踪迹几乎遍布世界的每一个角落。
What insect is it
I have six legs. I can fly.
I like flowers. I am beautiful.
What am I
----butterfly
I’m an insect.
I have a head. I have a body.
I have a pair of feelers.(触角)
I have two pairs of wings.(翅膀)
The life-cycle of butterfly
1
4
3
2
Listen and match
Picture 1
What are on the leaf
Who lays the eggs on a leaf
What colour are the eggs
What are on the leaf
They are eggs.
The butterfly lays eggs on a leaf.
The eggs are small and white.
Who lays eggs on a leaf
caterpillar
What’s this It’s a __________.
_____ become small caterpillars.
Picture 2
The eggs
The caterpillar eats …
At first,the caterpillar is _____ and ______.
hungry
He likes eating apples, pears,____,____,____
So the caterpillar is ________ and ________.
big
fat
small
Fill in the blanks
What can you see in the picture
A cocoon.
school food zoo moon noon
Picture 3
hoop
boost
The __________makes a cocoon.
A. butterfly
B. caterpillar
C. eggs
caterpillar
Look and Choose
What is it going to be
Picture 4
The life-cycle of butterfly
Look and say:
A butterfly is an ____. It ___eggs on a leaf. The eggs are small and white. The eggs become small ____. The small caterpillars eat ____. They grow and grow. Now this caterpillar is ____and ___. It makes a little ____. It is a ____. The cocoon____. A butterfly _____out. The sun makes the butterfly ______. It is a______butterfly.
The life-cycle of butterfly
Look and say:
A butterfly is an insect. It lays eggs on a leaf. The eggs are small and white. The eggs become small caterpillars. The small caterpillars eat leaves. They grow and grow. Now this caterpillar is big and fat. It makes a little house. It is a cocoon. The cocoon opens. A butterfly comes out. The sun makes the butterfly dry. It is a beautiful butterfly.
Look and say
butterfly
cocoon
caterpillars
eggs
The life-cycle of moth / frog
eggs
caterpillar
moth
cocoon
eggs
tadpole
frog
The very hungry caterpillar
In the light of the moon ,a little egg lies on a leaf.
One Sunday morning ,the warm sun is coming up .Pop---out of the egg, comes a tiny and very hungry caterpillar.
On Monday, he eats through one apple. But he is still hungry. On Tuesday, he eats through two pears. But he is still hungry. On Wednesday, he eats through three plums. But he is still hungry. On Thursday ,he eats through four strawberries. But he is still hungry. On Friday, he eats through five oranges. But he is still hungry. On Saturday, he eats through one piece of chocolate cake, one ice-cream cone, one pickle, one slice of salami, one sausage, one cupcake and one slice of watermelon. This night he has a stomachache! The next day is Sunday again. The caterpillar eats through one nice green leaf, and after that he feels much better. Now he isn’t hungry any more, and he isn’t a little caterpillar any more. He is a big, fat caterpillar.
He builds a small house, calls a cocoon, around himself. He stays inside for more than two weeks.
Then he nibbles a hole in the cocoon, pushes his way out and …… He is a beautiful butterfly!
1. Listen to and read the story of 'The very hungry caterpillar ' .
2. Tell the story of butterfly to your friends or parents.
Homework