Открытый урок по биологии на английском языке. Урок проводится в 7 классе. Урок очень интересный и познавательный.Дети отвечают на вопросы, работают в группах и выполняют задания самостоятельно.В конце урока заполняют таблицу сравнивая рептилии, млекопитающих, птиц и рыб. Много интересных фактов о млекопитающихОткрытый урок по биологии на английском языке
Class mammals.doc
М. Х. Дулати атындағы үш тілде оқытатын мамандандырылған дарынды балаларға
арналған №8 гимназия
Form: 7.
Theme: Class Mammals.
Aims: to know about the body structure of mammals;
To study mammals’ body processes, to know mammals’ body systems;
To be able to distinguish mammals from birds, reptiles, and amphibians, and fish;
To know how they reproduce and feed; to enrich students’ vocabulary;
To get learners to work cooperatively; to activate students;
To educate students to protect and love all kinds of animals;
Aids: blackboard, copy prints, interactive blackboard, rebus, pictures of mammals.
I. Organization moment:
The Lesson Procedure:
Greetings and checking students’ attendance.
II. Setting the aims:
T: What are we studying today?
Cl: Class Mammals
T: That’s right. What was the theme of the previous theme?
III. Warmup:
a) question – answer work to revise the previous lesson:
1. What are the five Kingdoms which all animals belong to?
(Protista, Fungi, Monera, Plant, Animal)
2. What body systems do animals have?
(Feed, move, breathe, grow, reproduce, excrete, respond)
3. What are the main differences between vertebrate and invertebrate animals?
(in their backbone)
4. How do we call scientists that study fish?
(Ichthyologists)
5. How do scientists classify all fish?
(Cartilage and bony fish)
6. General characteristics of amphibians.
7. How do scientists classify all amphibians?
(Frogs and toads, salamanders, caecilians)
8. How do they breathe?
(landdwelling, waterdwelling)
9. General characteristics of reptiles.
10. How do zoologists classify reptiles?
(Lizards and snakes, turtles, crocodilians, the tuatara)
IV. Class Mammals, presentation:
Mammals.
Mammal is an animal that feeds its young on the mothers’ milk. There are more than
5000 species of mammals. Mammals differ from all or most other animals in five major ways:
They nurse their babies.
They have hair.
They are warmblooded.
They have well developed brain than do other animals.
They give their young more protection and training than do other animals. Skin and hair of mammals. Skin consists of an inner layer, the dermis, and an outer
layer, the epidermis. The skin of mammals has a supply of glands (mammary glands, sebaceous
glands, sweat glands, and scent glands – dogs and skunks).
Skeleton of mammals provides a framework for the body and protects vital organs. The
skeleton consists of the skull, the vertebrae column, thoracic basket, limbs and their supports. All
mammals have seven cervical vertebrae.
The digestive system consists of a long tube that is formed by the mouth, the esophagus,
the stomach, and the intestines. The digestive system of mammals varies according to the kind of
food an animal eats. Cows and sheep have a fourchambered stomach. Most mammals are
herbivorous. Herbivorous mammals have highcrowned teeth that wear down slowly. The
incisors (front teeth) of rabbits grow continuously to keep up with the wear caused by chewing.
Some mammals are carnivorous. They eat flesh. Many of them are speedy hunters that catch,
hold and pierce their prey with long, pointed canine teeth. Various mammals eat insects
(insectivorous; bats, moles, shrew).
Respiratory system is made up of two lungs and various tubes that lead to the nostrils.
The trachea branches into bronchi that end in tiny air sacs. Air sacs are made of even smaller
alveoli. This is where oxygen is absorbed into the blood. A network of capillaries lies within the
walls of each alveolus. A muscular sheet called the diaphragm divides the chest cavity from the
abdominal cavity and aids in breathing. Contraction and relaxation of the chest wall muscles
causes drawing fresh air into the lungs and it’s flowing out.
Circulatory system consists of the heart and blood vessels. Mammals have an extremely
efficient fourchambered heart, which pumps blood to all parts of the body. The blood carries
food and oxygen to the body tissues, where they are burned to release energy. The blood follows
two routes called the pulmonary circulation and the systematic circulation.
The excretory system eliminates waste from the body by means of the kidneys.
The nervous system regulates most body activities. It consists mainly of the brain and
spinal cord and their associated nerves. Most kinds of mammals have a larger brain than do other
animals of similar size. In addition, mammalian brains have an extremely well developed
cerebral cortex. This part of the brain serves as the center for learning and gives mammals
superior intelligence.
The major senses of mammals are smell, taste, hearing, sight, and touch. Most species
have large nasal cavities lined with nerves that are sensitive to odors. These animals rely heavily
on smell to find food and to detect the presence of enemies. Dolphins and whales seem to lack
the sense entirely.
Taste helps mammals identify foods and so decide what foods to eat. This sense is
located mainly in taste buds on the tongue.
Most species have an outer ear, which collects sound waves and channels them into the
middle and inner ear. Only mammals have an outer ear. Tactile nerves are found all over a
mammals’ body. The whiskers of cats, dogs and mice have many tactile nerves at their base.
Intelligence is difficult to measure. The size of the surface area of the brain, especially of
the cerebral cortex, generally indicates an animals’ learning ability. In the more intelligent
mammals, such as chimpanzees and dolphins, the cerebral cortex is fairly large and has many
folds, which further increase its surface area.
Terrestrial animals. Majority of them move about on four legs. Kangaroos are terrestrial
animals that move by hopping. These animals have powerful hind legs. They also have a long
tail that is used for balance. Dolphins, porpoises and whales are mammals that live their entire
life in water. They have a streamlined body and a powerful tail, which they move up and down
to propel themselves through the water. Their forelimbs are paddle like flippers used for balance
and steering. They have no limbs. Bats are the only mammals that can fly. Moles spend all their life underground. Most of fossorial animals have strong claws and powerful forelimbs. Many of
them have poor vision, and some are blind.
Mammals provide meat, leather and other products. Horses, oxen, camels, elephants,
reindeer, llamas have been used for transportation. Some mammals (cats, dogs, hamsters,
rabbits) are popular pets. People hunt antelopes, deer, rabbits, and squirrels for their flesh and
hides. Rhinoceroses are killed for horns. Mammals are important to the whole system of life on
the earth. Flesheating mammals help maintain the balance of nature by feeding on planteating
animals. Many mammals help plants grow. Animals’ droppings are a valuable fertilizer. The
bones of dead mammals break down into chemicals that are needed by animals and plants.
Reproduction of mammals: to know how mammals reproduce students should guess the
following rebuses.
1. The first rebus means – “Placentals”. They give birth to fairly welldeveloped
offspring. After fertilization occurs, a placental mammal begins to develop in the uterus, a
hollow organ in the mothers’ abdomen. Another organ called the placenta, attaches the
developing mammal, called an embryo, to the uterus wall. The embryo receives nourishment
from the mother through the placenta.
2. The second rebus means – “Marsupials”. They (kangaroos, koala bear, and
wombats) give birth to tiny, poorly developed offspring. Immediately after birth the young attach
themselves to the mothers’ nipples, and remain attached until they develop more completely.
3. The third rebus means – “Monotremes”. They do not give birth to live young.
Instead, they lay eggs that have a leathery shell. After an incubation period, the eggs hatch. The
only monotremes are the echidnas and the platypus.
V. Vocabulary consolidation:
1. Match the words so that they make a sense:
1. rely on
2. supply
3. odor
4. droppings
5. sprout
6. hide
7. indicate
8. aid
9. increase
10. identify
a. faeces
b. enlarge
c. help
d. trust
e. leather
f. recognize
g. store
h. show
i. smell
j. germinate
2. Odd one out;
1. porpoise
2. oxen
3. shrew
4. esophagus
5. sebaceous
6. maintain
7. platypus
8. nipple
9.canine
10. eliminate
whale
rhinoceroses
mole
alveolus
sweat
propel
mole
uterus
horn
separate
wombat
reindeer
hamster
bronchus
mammary
steer
echidna
placenta
incisor
excrete 3. Match synonyms:
1. rely on
2. supply
3. odor
4. droppings
5. sprout
6. hide
7. indicate
8. aid
9. increase
10. identify
a. faeces
b. enlarge
c. help
d. trust
e. leather
f. recognize
g. store
h. show
i. smell
j. germinate
VI. New material consolidation (to check students’ understanding):
1. True – false sentences, students should read the sentences and correct them:
1. Mammals have well developed brain than do other animals. (t)
2. They can not feed their living young by milk. (f)
3. All mammals have seven cervical vertebrae. (t)
4. Cows and sheep have a fourchambered stomach. (t)
5. Herbivorous mammals have highcrowned and pointed canine teeth. (f)
6. The blood of mammals flows two routes called the pulmonary and the systemic circulation. (t)
7. Placentals give birth to tiny, poorly developed offspring. (f)
8. Monotremes lay eggs that have a leathery shell. (t)
9. Mammals breathe by their gills that are called nostrils. (f)
10. Mammals provide meat, leather and other products. (t)
2. Fill in the table, by compare all vertebrate animals students should fill the table in the
құстар
қосмекенділер жорғалаушылар
балықтар
сүтқоректіле
р
Kazakh:
Класс:
Түрлері:
Қоректенуі:
Тыныс алуы:
Ас қорытуы:
Көбеюі:
Зәр шығаруы:
Қозғалуы:
Өмір сүру
ортасы:
VII. Giving the home task:
1) Class Mammals (lecture).
2) Learn new terms.
3) Draw the table and compare all vertebrate animals.
VIII. Giving feedback.
Открытый урок на тему "Mammals"
Открытый урок на тему "Mammals"
Открытый урок на тему "Mammals"
Открытый урок на тему "Mammals"
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