2. Pre Teaching:
1. Teacher asks students some questions about
life cycle of mosquito. For examples:
• Have you been biten by the mosquitoes?
• Do you know how the life cycle of them?
3. The teachers will show a video life cycle of
mosquito.
4. Before the teacher shows the video, the
teacher gives some information about the
video and tell them to answer some
questions.
3. To know more about exlanation text,
let’s watch this audio!
4.
5. Let’s discuss the question below!
1. What does the video talk about?
2. How many stages that the butterfly has in
their live cycle?
3. Where does the mother mosquito float the
eggs?
4. Why does the larva live in the water?
5. What is the pupal stage?
6. Generic Structure
• General statement
Mosquito Life Cycle
The mosquito goes through four separate
and distinct stages of its life cycle and they are
as follows: Egg, Larva, pupa, and adult. Each of
these stages can be easily recognized by their
special appearance.
7. • Sequenced explanation
The first stage of mosquito life cycle is egg. The eggs
are laid one at a time and they float on the surface of the
water. Most eggs hatch into larvae within 48 hours. Then
eggs change into larva that live in the water and come to the
surface to breathe. It eats micro-organisms and organic matter
in the water. Larva becomes pupa where it is resting and the
time the mosquito turns into an adult. When development is
complete, the pupa skin splits and the mosquito emerges as
an adult. The newly emerged adult rests on the surface of the
water for a short time to allow itself to dry and all its parts
to harden. Also, the wings have to spread out and dry
properly before it can fly.
Adapted from http://www.mosquitoes.org/LifeCycle.html#anchor31858
8. To get more understanding about the
generic structure, let’s listen the first
paragraph of “Butterfly life cycle”. This is
the general statement of explanation text!
17. Listen carefully to the last paragraph of
“The Dragonfly Life Cycle” and choose the best
answer for the question 12 to 15.
18. 12. When does the metamorphosis
complete into dragonfly?
a. The nymph is grown
b. The weather is bad
c. The weather is right
d. The nymph is grown and the
weather is right
e. The pupa dies
13. When does the life cycle begin again?
a. When finding calm water
b. When finding good water
c. When finding cool water
d. When finding hot water
e. When finding cold water
14. How long does the adult dragonfly
live?
a. 6 months
b. 5 months
c. 4 months
d. 3 months
e. 2 months
15.What are the stages of dragonfly
life cycle?
a. Adult, egg, pupa
b. Adult egg, larva
c. Adult, egg, nymph
d. Egg, larva, nymph
e. Egg, nymph, adult
19. Listen carefully to the first paragraph of
“The Frog Life Cycle”
and answer the question 1 to 3.
Activity 2
20. 1. What is amplexus?
a. The female in an embrace
b. The female underneath in an
embrace
c. The male underneath in an
embrace
d. The male in an embrace
e. The male and female
underneath in an embrace
2. Where does the male frog fertilize
the eggs?
a. In the water
b. In the air
c. In the amplexus position
d. In the oxyus position
e. In the oxypus position
3. Where do toods usually lay the
eggs?
a. In long chairs
b. In long table
c. In long chains
d. In long chances
e. In long chases
21. Listen carefully to the second paragraph of
“The Frog Life Cycle”
and answer the question 4 to 12.
22. 4. What is the first stage of Frog
Life Cycle?
a. Adult
b. Larva
c. Pupa
d. Nymph
e. Egg
5. Why do the frogs and toods
tend to lay their eggs?
a. Because there are many
enemies
b. Because there are many
hazards
c. Because there are many
competitors
d. Because there are many
snakes
e. Because there are many frogs
6. When will the eggs hatch?
a. 6-11 days after being
fertilized
b. 5-11 days after being
fertilized
c. 6-21 days after being
fertilized
d. 8-21 days after being
fertillized
e. 10-21 days after being
fertilized
7. Where will the egg hatch?
a. In dynamic water
b. In hot water
c. In warm water
d. In static water
e. In cool water
23. 8. What are the second stage of frog life
cycle?
a. Tadpole
b. Egg
c. Foam
d. Adult frog
e. Nymph
9. When does the foam change into
tadpole?
a. When the sun shines
b. When the moon comes along
c. When the star comes along
d. When the cloud comes along
e. When the rain comes along
10. What does the tadpole consist of?
a. poorly developed a mouth, and a tail
b. poorly developed gills, and a tail
c. poorly developed gills, a mouth, and
a tail
d. poorly developed gills and a mouth
e. poorly developed kills, a mouth, and
a tail.
11. When will the tadpole hatch?
a. 7-10 days
b. 8-10 days
c. 9-10 days
d. 6-10 days
e. 5-10 days
12. What are the food of tadpole?
a. fish
b. snake
c. egg
d. foam
e. algae
24. Listen carefully to the last paragraph of
“The Frog Life Cycle” and answer the question
13 to 15.
25. 13. When will the body of frog appear?
a. After 5-9 weeks
b. After 6-9 weeks
c. After 7-9 weeks
d. After 8-9 weeks
e. After 9 weeks
14. What are the diet of tadpole with
legs?
a. Plants
b. Insects and plants
c. Dead insects and plants
d. Insects
e. Dead insects and plans
15. When does the tadpole start the life
cycle again?
a. After 12 weeks
b. 11-12 weeks
c. Before 12 weeks
d 10-12 weeks
e. By 12 weeks
26. Transcript
Butterfly Life Cycle
Every butterfly goes through four stages in its life. Each stage is very
different from the others. Butterflies have life cycle are egg, larva, pupa, and adult.
Butterflies have body; appear of antennas, and beautiful wings. The wings of
butterflies usually have many color like green, purple, blue, etc.The cycle of stages is
called metamorphosis.
The egg is the first stage in the butterfly life cycle. Butterfly eggs are very
small and round, oval or cylindrical. Many have ribs or other tiny features. Females lay
their eggs on or near the plants that will later become caterpillar food.
The larva hatches from the egg. Butterfly is usually called caterpillars. Caterpillars
spend most of their time eating. Butterflies do all of their growing when they're
caterpillars, and food gives them the energy and body-building materials they need.
Larva changes into caterpillar so finiished growing and become pupa. When the pupa
has finished changing, it changes into adult. The adult emerges with its wings folded
up against its body. The butterfly pumps blood into the wings to expand them. The
adult is the stage when butterflies mate and reproduce. Females lay their eggs on plants
or other surfaces, and the cycle starts all over again.
Adapted from http://exhibits.pacsci.org/insects/buttermoth.html
27. The Dragonfly Life Cycle
A dragonfly has a life span of more than a year, but very little
of that life is actually as an adult dragonfly. There are three stages
of the dragonfly life cycle, the egg, the nymph, and the adult
dragonfly. Most of the life cycle of a dragonfly is lived out in the
nymph stage.
A male and a female dragonfly will mate while they are flying
in the air. After two dragonflies mate, the female dragonfly will lay
her eggs on a plant in the water. Once the dragonfly eggs hatch, the
life cycle of a dragonfly larva begins as a nymph. A nymph looks like
a little alien creature that hasn’t grown its wings yet. It lives in the
water and eat smaller dragonfly nymphs as they develop.
Once the nymph is fully grown, and the weather is right, it will
complete the metamorphosis into a dragonfly by crawling out of
the water up the stem of a plant. The dragonfly will hunt for food
and begin to look for a mate. Once the dragonfly finds a mate, the
female will find a body of calm water that will be a good place to
lay her eggs, and the life cycle of the dragonfly begins all over again.
Adult dragonflies only live about two months.
Adapted from http://www.dragonfly-site.com/dragonfly-life-
cycle.html
28. Life Cycle of a Frog
When Frogs mate, the male frog tends to clasp the female underneath in an
embrace called amplexus. While in the amplexus position, the male frog fertilizes
the eggs as they get are laid. Frogs tend to lay eggs single eggs in masses, whereas
toads usually lay eggs in long chains.
The first stage is egg where Frogs and toads tend to lay many eggs because
there are many hazards between fertalization and full grown frogness.
Usually, about 6-21 days after being fertilized, the egg will hatch and can be found
in calm or static waters. Afte that,the foam sometimes cakes dry in the sun. When
the rain comes along, after developement of 7 to 9 days, the foam drips down,
dropping tiny tadpoles into the river. Shortly after hatching, the tadpole still feeds
on the remaining yolk. The tadpole at this point consists of poorly developed gills,
a mouth, and a tail. Then, 7 to 10 days after the tadpole has hatched, it will begin
to swim around and feed on algae.
After about 6 to 9 weeks, the body of frog will appear. By now the diet may
grow to include larger items like dead insects and even plants. After about 9
weeks, the tadpole looks more like a teeny frog with a really long tail. By 12 weeks,
the tadpole will leave the water, only to return again to laymore eggs and start the
process all over again.
Adapted from http://allaboutfrogs.org/weird/general/cycle.html