Under the sea 教學設計

 
②my favorite sea animal is tropical fish(熱帶魚).i found them on a snorkelling trip.i was attracted by its colorful appearance.in the half an hour's trip from the shore，i found coral reefs，tropical fish and other marine life.excitedly，i bought some fishes home.it was my first time to raise tropical fish.one month ago my friend told me that tropical fish are easier to raise than the golden fish.her words let me think of another friend of mine.he is raising tropical fish.i am feeding four categories of tropical fish.two black marry，eight peacocks，another two fishes，although i don't know their names，are the most beautiful.the peacock is the smallest and isn't colorful as i have seen in other places before.my friend told me they will be beautiful when they grow up.so i put the eight peacock fish into a small fish jar.i observes them every day and is expecting them to be bigger and more colorful.two of the four big tropical fishes have died including the beautiful one.perhaps the beautiful fish's life is fragile.if it is true，then i don't expect the small peacocks to turn beautiful.i shouldn't be so greedy to want both.that they just have strong life is enough for me.
2.the teacher show the picture of a killer whale and do a small quiz about it.
(1)what's the chinese and english name of this whale?
 
虎鯨killer whales
(2)can you match these whales with their chinese and english names？(show students some pictures of different whales.)
 　　　　　
baleen whale 須鯨  sperm whale抹香鯨
   
blue whale 藍鯨  white whale白鯨
(3)which of these kinds of whales can grow to be the largest?
blue whales 藍鯨(about 21－27m in length,100－120tons in weight)
(4)humans have been hunting whales for more than __a__ years.
a.　　　　　　　b.1000　　　　　　　c.500
(5)will the killer whales attack people and eat them？　no.
(6)does a female killer whale give birth to a baby whale or lay eggs？　give birth to a baby whale.
(7)what does a newly－born baby killer whale feed on？__c__
a.small sea animals.  b.sea plants.  c.its mother's milk.
(8)do the killers belong to the family of dolphins or whales？　dolphins.
(9)male killer whales have a life expectancy of __b__ years，while females can live as long as __d__ years.
a.40－50　　　　　b.50－60　　　　　c.60－70　　　　　d.80－90
(10)killers are highly social animals that travel in groups called pods(群).pods usually consist of __a__ whales.
a.2－50      b.20－50       c.30－60