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Методическая разработка урока "Resistors" 11 класс

комитет образования и науки Волгоградской области
государственное бюджетное профессиональное образовательное
учреждение
«Волжский политехнический техникум»
Методическая разработка открытого урока по теме « Resistors »
Учебная дисциплина: Иностранный язык
Специальность: специальность ЭМЭ
Курс: 3
Автор: преподаватель иностранных языков Федотова М.А.
2015г.
Тема: « Resistors »
Цели:
1.Тренировка произносительных навыков.
2. Ознакомление с новой лексикой по теме « Resistors »
3.Изучение нового материала и активизация грамматических навыков по
теме: «Согласование времен»
4.Развитие умений и навыков чтения (аудирования) с целью детального
понимания содержания.
5.Развитие навыков говорения.
6. Формирование функций автоматических элементов.
Задачи:
- понять основные грамматические признаки;
- развить знания и умения, анализировать материал и отвечать на вопросы,
применять полученные знания на практике.
Методы обучения:
1.словесные
2.наглядные
3.репродуктивные
4.частично-поисковые
Оборудование:
1.мультимедийный проектор;
2.экран;
3.раздаточный материал: карточки с заданиями, комплекты практических
заданий.
1.Introduction.
Teacher. Hello, my dear students! How are you? I am glad to see you. Today we
are going to talk about « Resistors ».
2 Phonetic activities.
1. Students read the following words:
produce производить
temperature температура
rate уровень
watt ватт
energy энергия
fixed фиксированный
high высокий
low низкий
the (more) ... the (more) более…более чем
power сила
capacity мощность, способность
current ток
carrying переноска
constant постоянный
vary менять
variable переменный
change изменение
heat высокая температура
2. Read and translate the text.
RESISTORS
A resistor is one of the most common elements of any circuit. Resistors are used:
1. to reduce the value of current in the circuit;
2. to produce IR voltage drop and in this way to change the value of the
voltage.
When current is passing through a resistor its temperature rises high. The higher
the value of current the higher is the temperature of a resistor. Each resistor has a
maximum temperature to which it may be heated without a trouble. If the
temperature rises higher the resistor gets open and opens the circuit.
Resistors are rated in watts. A resistor is rated as a 1-W resistor if its resistance
equals 1,000,000 ohms and its current-carrying capacity equals 1/1,000 000 amp,
since P = E X I = IR X I = I
2
R where P — power — is given in watts, R —
resistance is given in ohms and I — current — is given in amperes.
If a resistor has a resistance of only 2 ohms but its current-carrying capacity equals
2,000 amp, it is rated as a 8,000,000-W resistor.
Some resistors have a constant value — these are fixed resistors, the value of other
resistors may be varied — these are variable resistors.
The watt is the rate at which electric energy is supplied when a current of one
ampere is passing at a potential difference of one volt.
3) Students answer the following questions and make exercises:
A
Find the correct variant. Remember it:
3. a resistor is used
a) to measure the resistance
b) to reduce the current
c) to change the resistance
d) to produce IR voltage drop
4. when current passes through a resistor
a) its temperature drops
b) its temperature rises
5. resistors are rated
a) in ohms
b) in volts
c) in watts
6. power is given
a) in amperes
b) in watts
7. fixed resistors have
a) a constant value
b) a variable value
8. the value of a variable resistor
a) is fixed
b) is varied
9. a two ohm resistor rated as a 8,000,000-W resistor
a) has a current-carrying capacity equal to 2,000 amp
b) has a current-carrying capacity equal to 200 amp
10. the higher the value of current
a) the lower is the temperature of a resistor
b) the higher is the temperature of a resistor
В
Finish the sentences using the words with the opposite meaning:
1. The value of a fixed resistor is constant while ... ... . 2. Current-carrying
capacity is given in amperes while ... ... . 3. The lower the value of current the
lower is the temperature of a resistor while 4. An electric source produces
energy while…..
Answer the following questions:
1. What is a resistor used for? 2. When does the temperature of a resistor rise? 3.
What element is used to change the value of voltage? 4. How are resistors rated? 5.
What types of resistors do you know? 6. When does a resistor get open? 7. What
does an open resistor result in? 8. What is the difference between a fixed resistor
and a variable resistor? 9. How much is the current-carrying capacity of a 2 ohm
resistor? 10. What resistors have a variable value?
4) Grammar activities
Согласование времен
В английском языке существует правило согласования времен в
сложноподчиненных предложениях в основном с придаточными
дополнительными.
Правило согласования времен не действует, если в главном предложении
глагол стоит в настоящем или будущем времени.
Не says that they were good friends for many years. - Он говорит, что они были
хорошими друзьями в течение многих лет.
Правило согласования времен действует лишь в том случае, если в главном
предложении глагол стоит в Past Indefinite (Simple) или Past Continuous
(Progressive). В этом случае в придаточном предложении употребляется:
11. для выражения одновременного действия Past Indefinite (Simple) или
Past Continuous (Progressive):
He said that they were good friends. — Он сказал, что они хорошие друзья.
12. для выражения действия, предшествующего действию главного
предложения, — Past Perfect.
Не said that they had been good friends for many years. — Он сказал, что они
были хорошими друзьям в течение многих лет.
13. для выражения будущего действия употребляется особое время,
которое называется Future in the Past (будущее в прошедшем), которое
образуется при помощи вспомогательных глаголов should, would и
инфинитива смыслового глагола без to.
Не said that they would go to Moscow in summer. - Он сказал, что они поедут в
Москву летом.
По тому же принципу действует согласование времен при переводе
повествовательного предложения из прямой речи в косвенную, при этом
заменяются следующие указательные местоимения, наречия времени и
места:
Прямая речь
Косвенная речь
this
that
these
those
today
that day
yesterday
the day before
the day before yesterday
two days before
tomorrow
the next day, the following day
next week (month, year)
the following (the next) week (month, year)
last week (year)
the previous week (year), a year (a week) before
here
there
ago
before
now
then, at that time
1) Students make next exercise
It is necessary to retell news urgently! Pay attention to changes which are
necessary along with change of time of verbs.
1I have wonderful news.
Patricia told me that she had wonderful news.
2Yesterday I had a pregnancy test done.
3I am three months pregnant.
4The baby is due in March next year.
5I should have known myself because every morning I woke up feeling ill.
6I felt sick in the mornings during the first couple of days of my pregnancy.
7I gave up smoking when I found out.
8I’ve been reading many books about how to be a good mother.
9We’re going away for a few days because I need a rest.
10Eventually, I’m going to give up work.
11You can come and babysit for me if you like.
Key: Patricia told me that 1 she had wonderful news. 2 the day before ( the previous
day) she had had a pregnancy test done. 3 she was three months pregnant. 4 the
baby will be due in March next year. 5 she should have known herself because
every morning she had woken up feeling ill. 6 she had felt sick in the mornings
during the first couple of days of her pregnancy. 7 she had given up smoking when
she found out. 8 she had been reading many books about how to be a good mother.
9 they were going away for a few days because she needed a rest. 10 eventually
she was going to give up work. 11 I could come and babysit for her if I liked.
Jill shared news from own life. And Patricia, certainly, will tell them to
another.
Two months ago John asked me to marry him.
Jill said that John had asked her to marry him two months before.
I’ve been in love with him for many years now.
She said that
So I said yes.
We’re getting married on 5th June.
This will be the happiest day of my life.
Will you be able to come to our wedding?
We’ll spend our honeymoon on the Bahamas.
Key: Jill said that 1 John had asked her to marry him two months before. 2 she had
been in love with him for many years. 3 she had said yes. 4 they were getting
married on 5th June. 5 that (day) would be the happiest day of her life. 7 they
would spend their honeymoon on the Bahamas. She asked те if I would be able to
come to our wedding.
14. Найдите в диаграмме десять глаголов, которые могут вводить
косвенную речь.
O
Z
S
F
М
К
Н
T
Q
X
C
L
H
S
P
К
А
Е
N
S
Т
А
Е
Q
K
А
M
I
Т
X
Z
А
L
D
А
S
G
Y
S
R
Е
Р
L
К
R
I
N
Т
S
V
N
R
L
L
К
G
Е
W
R
Т
U
S
X
Р
L
А
I
Т
М
S
Т
R
D
R
S
А
М
I
W
R
А
D
W
Е
Е
Z
M
S
А
N
S
Е
R
F
U
Р
Р
Н
T
Е
L
В
M
N
К
Z
I
0
X
W
N
К
X
Y
0
D
М
S
V
G
Q
S
M
J
Y
Е
Z
С
А
B
R
N
5) Аудирование.
Listen and tell me please about text.
Wattmeter
A wattmeter is used to measure the value of power. It is connected to the circuit
directly. A wattmeter consists of coils: two fixed coils and a coil which moves in
the magnetic field produced by the fixed coils. Wire used for the coils must have a
high resistance; the fixed coils are in series with the load, the moving coil is
connected across the line in series with a resistance. When a wattmeter is used, the
readings on its scale show the value of power being used.
Answer the following questions:
1. What is the text about? 2. What is the wattmeter used for? 3. What does it
consist of? 4. In what way are the elements connected? 5. What do the readings on
the scale show?
Rheostat
A rheostat is a resistor whose resistance value may be varied. Thus, a rheostat is a
variable resistor.
It is used to change the resistance of circuits, and in this way to vary the value of
current.
A rheostat consists of a coil and a switch. Take into consideration that wire used
for the coil must have a very high resistance. When a rheostat is used its terminals
are connected in series with the load. The switch is used to change the length of the
wire through which the measured current passes. The resistance may be changed to
any value from zero to maximum.
The longer the rheostat wire used in the circuit the greater the resistance.
Answer the questions:
1. What is this text about? 2. What type of resistor is a rheostat? 3. What is a
rheostat used for? 4. In what way does a rheostat vary the value of current? 5.
What elements does a rheostat consist of? 6. In what way are the terminals
connected with the load? 7. What is the function of the switch?
8) Объявление домашнего задания и выставление оценок.
Learn new words. Solve the following problem: What is the maximum current for a
resistor having a 5-watt capacity and a resistance of 20,000 ohms?
Заключение.
Применение разных форм работы поддерживает активность внимания и
снижает утомляемость. Урок считается комплексным, но в нем
переплетаются различные виды работы. Прослеживается речевая активность
учащихся.
Комбинированный урок совмещает в себе речевые умения и языковые
навыки. В данном случае мы наблюдаем следующие черты ИЯ: речевая
направленность, функциональность, ситуативность, индивидуализация
процесса обучения.
Типология уроков следующая: урок ознакомления с новым материалом;
урок применения знаний и умений; урок проверки и коррекции знаний и
умений; комбинированный урок.
Список используемой литературы:
А.Л.Луговая. Пособие по английскому языку для учащихся энергетических
специальностей. М.:Высшая школа,1969.
Габи Гальстер, Зигрид Бруггер, пер.на русский Н.А .Ганиной. Английская
грамматика/ Учебное пособие. Москва 2011.
А.С.Восковская,Т.А.Карпова.Английский язык. Ростов н/Д:Феникс,2011.
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