Projekt OBOGATENO UČENJE TUJIH JEZIKOV
Datum: 25. 3. 2012
Primer PRIPRAVE NA POUK tujega jezika za mesec MAREC 2012
Priloga 2
Šola:
Status šole:
Naslov priloge:
Kratek opis (vrsta in vsebina):
Ciljni tuji jezik(i):
Vegova Ljubljana
Matična šola
Touch Screen Technologies
ANGLEŠČINA
Operacijo delno financira Evropska unija iz Evropskega socialnega sklada ter Ministrstvo za šolstvo in šport. Operacija se izvaja v okviru Operativnega programa razvoja človeških virov v obdobju 2007-2013,
razvojne prioritete: Razvoj človeških virov in vseživljenjsko učenje; prednostne usmeritve: Izboljšanje kakovosti in učinkovitosti sistemov izobraževanja in usposabljanja.
UČNA PRIPRAVA ZA TIMSKO POUČEVANJE
Team Teaching Preparation
Predmet/-a/-i Subject(s)
Učitelja/-i
Teachers
Letnik, razred
Class
Učni sklop, tema
Topic
Zaporedna št. ure
No of lessons
Učilnica
Classroom
English
Mojca Fink / Amresh Prakash Torul
G3.A / G3.B
Academic literacy, Touch Screen Technologies
1
221
Žarišče ure oz. sklopa (npr. razvijanje kritičnega mišljenja):
Lesson focus:
Academic literacy, Content-based foreign language learning
Vrsta timskega poučevanja
Team teaching type
Alternative
Učna oblika
Teaching design
Frontal, Working in pairs
Učna metoda
Teaching method
Explanation/Conversation
Učna sredstva in pripomočki
- za učitelja:
- za dijake
- internet, computer and projector, handout
- handout
Teaching aids, devices
- teacher
- student
Potrebno predznanje dijakov:
Prior required knowledge
Students must be familiar with technical texts in English. They must have experience
working out word formation and grammar exercises including the present perfect tense.
CILJI PREDMETA
Learning objectives:
- Students learn about three different touch screen technologies, how they work, and their
advantages and disadvantages.
- They learn new technical vocabulary related to touch screens
- The handout includes word formation and grammar exercises.
2
POTEK UČNE URE
Teachers' and students' activities
Čas /
Time
5 mins
10 mins
30 mins
Local English teacher
Foreign teacher
Introduce the topic
Operate the computer and
show students the video
about Corning glass.
Discussion about touch
screens: ask students
various questions about
touch screens. What they
really are, where they are
used and how they work
Give students the
handouts and give
instructions in Slovene.
Help the students.
Check the word
formation exercise.
Dijaki
Students
Watch the video
http://www.youtube.com/wat
ch?v=6Cf7IL_eZ38
Show students the
PowerPoint slides about
touch screens and
explain/discuss the different
issues with students
View the PowerPoint slides
and participate in the
discussion
Give instructions in English.
Help the students.
Students complete the
exercises on the handout
Check the TRUE/FALSE
questions and the vocabulary
part.
Correction
Correction
Give students the Slovene
translation of the key
vocabulary words.
Evalvacija/refleksija učiteljev / Evaluation of the lesson
The lesson was completed in 45 mins. Students were able to complete the exercises and the teachers
helped them when required.
The video from the Corning company proved to be a very good warmer. It prompted many students to
voice out their opinion about it. Despite the fact that those students were specialised in Computer
Science and Electronics, several of them rejected the ideas in the video. Some argued the ideas were
over-the-top.
Students found the lesson interesting in general. As teachers, we noticed that students prefer to
complete handouts where they are not required to write a lot. It could be attributed to pure laziness in
some cases, but there is a feeling that some students are afraid to write openly when given the
freedom to do so. Open questions, therefore, are not their favourite type of question.
3
Student’s sheet
Touch screen technologies
Read the text, put the words in brackets in their correct form and complete the exercises.
Touch screen monitors are very common as prices have _______________________
(STEADY) dropped over the past decade. There are three basic systems that are used to
recognise a person's touch: Resistive, Capacitive and Surface Acoustic Wave.
The resistive system consists of a normal glass panel that is covered
with a conductive and a resistive _______________________ (METAL)
layer. An electrical current runs through the two layers while the monitor
is _______________________ (OPERATE). When a user touches the
screen, the two layers make contact in that exact spot. The change in the
electrical field is noted and a special driver translates the touch into
something that the operating system can understand, much as a computer
mouse driver translates a mouse's _______________________ (MOVE)
into a click.
In the capacitive system, a layer that stores electrical charge is
placed on the glass panel of the monitor. When a user touches
the monitor with their finger, some of the charge is transferred to
the user, so the charge on the capacitive layer decreases. This
decrease is measured in circuits located near the monitor. The
computer then calculates exactly where the touch event took
place and then relays that information to the touch screen driver
software.
In the surface acoustic wave system, two transducers are placed
along the monitor's glass panel. Transducers are electronic devices
that transform energy from one form into another. The first
transducer is used to send an electrical signal and the other
receives it. Also placed on the glass are
_______________________ (REFLECT) -- they reflect the
electrical signal sent from one transducer to the other. The
receiving transducer is able to tell if the wave has been disturbed
by a touch event at any instant, and can locate it
_______________________ (ACCORDING).
Comparison
A resistive system registers a touch as long as its two layers make contact, which means that
it doesn't matter if you touch it with your finger or a rubber ball. A capacitive system, on the
other hand, must have a conductive input, _______________________ (USUAL) your
finger, in order to register a touch. The surface acoustic wave system works much like the
resistive system, allowing a touch with almost any object -- except hard and small objects like
a pen tip.
One advantage that the capacitive system has over the resistive system is that it transmits
almost 90 % of the light from the monitor, whereas the resistive system only transmits about
75 %. This gives the capacitive system a much clearer picture than the resistive system.
4
The surface acoustic wave system, however, has no metallic layers on the screen, allowing
for 100-percent light throughput and perfect image_______________________ (CLEAR).
This makes the surface acoustic wave system best for displaying detailed graphics.
As far as price is concerned, the resistive system is the cheapest, though its quality is the
lowest of the three, and its layers can be damaged by sharp objects. The surface acoustic
wave setup is _______________________ (NORMAL) the most expensive.
COMPREHENSION CHECK
1. Indicate whether the following statements are true or false.
a) Touch screen technology is still expensive today and therefore not so popular. __
b) The resistive system has a special driver which works much as a computer mouse driver
translates a mouse's movements into a click. __
c) The capacitive system consists of a layer that stores electrical charge placed on the glass
panel of the monitor. __
d) A surface acoustic wave system uses transducers to store charge. __
e) Resistive systems have very flexible screens that can be touch even by a rubber ball. __
f) Surface acoustic wave screens must have a conductive input, for example, a person’s
finger. __
g) The resistive system has a better image clarity than the capacitive system. __
h) A capacitive system transmits almost 90 % of the light from the monitor. __
i) The surface acoustic wave system has metallic layers on the screen. __
j) Of the three touch screen technologies discussed, surface acoustic wave produces the best
quality display. __
2. Match the key words on the right with the correct explanation.
Able to resist electricity
conductive
A disturbance that propagates through space and
resistive
time, usually involving transfer of energy
An electronic device that transforms energy from
capacitor
one form into another
Having the property of letting electricity through
transducer
A device used to store an electric charge
wave
5
3. Put the verbs in brackets into the correct form, active or passive.
New battery for mobile phones
Of the most important features in a mobile device, a solid battery life ___________________
(remain) key. Luckily for us all, researches in South Korea ___________________
(discover) a new way to recharge cell phones using nothing more than the power of the
human voice.
According to the Telegraph, engineers at a university in Seoul, South Korea,
___________________ (develop) a new type of battery that’s capable of transforming the
energy in sound waves into electrical energy that can be used to power a wide range of
devices. When ___________________ (use) with a mobile phone, the technology can charge
using not only speech, but all background noise — the louder the better. It even
___________________ (work) when the cell phone is not in use.
“A number of approaches for scavenging energy from environments ___________________
(explore),” said Dr. Sang-Woo Kim, who ___________________ (involve) in developing
the technology. “The sound that always ___________________ (exist) in our everyday life
and environment ___________________ (overlook) as a source. This
___________________ (motivate) us to realise power generation by turning sound energy
from speech, music or noise into electrical power.”
The sound-power technology wouldn’t only be useful for powering up your iPhone, says Dr.
Sang-Woo Kim. It could also hold the answer for a more practical recharging method for
electric cars.
“Sound power can be used for various applications ___________________ (include) cellular
phones that can be charged during conversations and sound-insulating walls near highways
that generate electricity from the sound of passing vehicles,” he says. “The latter
development ___________________ (have) the additional benefit of reducing noise levels
near highways by ___________________ (absorb) the sound energy of vehicles.”
The new type of battery works using a sound absorbing pad that ___________________
(vibrate) when ___________________ (hit) by sound waves. This vibration
___________________ (transfer – then) to tiny pieces of zinc oxide wire, which
___________________ (contract) and ___________________ (release) with the vibrations,
turning the energy of sound into electricity.
The battery is still in small-scale form, meaning it only ___________________ (work) with
very low-power devices. But the research team is confident that its energy-scavenging
creation ___________________ (find) its way onto a smartphone specification list in the nottoo-distant future.
6
Touch screen technologies - ANSWERS
Read the text, put the words in brackets in their correct form and
complete the exercises.
Touch screen monitors are very common as prices have steadily
dropped over the past decade. There are three basic systems that are
used to recognise a person's touch: Resistive, Capacitive and Surface
Acoustic Wave.
The resistive system consists of a normal glass panel that is covered
with a conductive and a resistive metallic layer. An electrical current
runs through the two layers while the monitor is operational. When a
user touches the screen, the two layers make contact in that exact spot.
The change in the electrical field is noted and a special driver translates
the touch into something that the operating system can understand, much
as a computer mouse driver translates a mouse's movements into a click.
In the capacitive system, a layer that stores electrical charge is
placed on the glass panel of the monitor. When a user touches
the monitor with their finger, some of the charge is transferred to
the user, so the charge on the capacitive layer decreases. This
decrease is measured in circuits located near the monitor. The
computer then calculates exactly where the touch event took
place and then relays that information to the touch screen driver
software.
In the surface acoustic wave system, two transducers are placed
along the monitor's glass panel. Transducers are electronic devices
that transform energy from one form into another. The first
transducer is used to send an electrical signal and the other
receives it. Also placed on the glass are reflectors -- they reflect
the electrical signal sent from one transducer to the other. The
receiving transducer is able to tell if the wave has been disturbed
by a touch event at any instant, and can locate it accordingly.
Comparison
A resistive system registers a touch as long as its two layers make contact, which means that
it doesn't matter if you touch it with your finger or a rubber ball. A capacitive system, on the
other hand, must have a conductive input, usually your finger, in order to register a touch.
The surface acoustic wave system works much like the resistive system, allowing a touch
with almost any object -- except hard and small objects like a pen tip.
One advantage that the capacitive system has over the resistive system is that it transmits
almost 90 % of the light from the monitor, whereas the resistive system only transmits about
75 %. This gives the capacitive system a much clearer picture than the resistive system.
The surface acoustic wave system, however, has no metallic layers on the screen, allowing
for 100-percent light throughput and perfect image clarity. This makes the surface acoustic
wave system best for displaying detailed graphics.
7
As far as price is concerned, the resistive system is the cheapest, though its quality is the
lowest of the three, and its layers can be damaged by sharp objects. The surface acoustic
wave setup is normally the most expensive.
1. Indicate whether the following statements are true or false.
a) Touch screen technology is still expensive today and therefore not so popular. (F)
b) The resistive system has a special driver which works much as a computer mouse driver
translates a mouse's movements into a click. (T)
c) The capacitive system consists of a layer that stores electrical charge placed on the glass
panel of the monitor. (T)
d) A surface acoustic wave system uses transducers to store charge. (F)
e) Resistive systems have very flexible screens that can be touch even by a rubber ball. (T)
f) Surface acoustic wave screens must have a conductive input, for example, a person’s
finger. (F)
g) The resistive system has a better image clarity than the capacitive system. (F)
h) A capacitive system transmits almost 90 % of the light from the monitor. (T)
i) The surface acoustic wave system has metallic layers on the screen. (F)
j) Of the three touch screen technologies discussed, surface acoustic wave produces the best
quality display. (T)
2. Match the key words with the correct explanation.
Resistive
Wave
Transducer
Conductive
Capacitor
Able to resist electricity
conductive
A disturbance that propagates through space and
resistive
time, usually involving transfer of energy
An electronic device that transforms energy from
capacitor
one form into another
Having the property of letting electricity through
transducer
A device used to store an electric charge
wave
8
3. Put the verbs in bracket into the correct form.
New battery for mobile phones
Of the most important features in a mobile device, a solid battery life remains key. Luckily
for us all, researches in South Korea have discovered a new way to recharge cell phones
using nothing more than the power of the human voice.
According to the Telegraph, engineers at a university in Seoul, South Korea, have developed
a new type of battery that’s capable of transforming the energy in sound waves into electrical
energy that can be used to power a wide range of devices. When used with a mobile phone,
the technology can charge using not only speech, but all background noise — the louder the
better. It even works when the cell phone is not in use.
“A number of approaches for scavenging energy from environments have been explored,”
said Dr. Sang-Woo Kim, who has been involved in developing the technology. “The sound
that always exists in our everyday life and environment has been overlooked as a source.
This motivated us to realise power generation by turning sound energy from speech, music
or noise into electrical power.”
The sound-power technology wouldn’t only be useful for powering up your iPhone, says Dr.
Sang-Woo Kim. It could also hold the answer for a more practical recharging method for
electric cars.
“Sound power can be used for various applications including cellular phones that can be
charged during conversations and sound-insulating walls near highways that generate
electricity from the sound of passing vehicles,” he says. “The latter development would have
the additional benefit of reducing noise levels near highways by absorbing the sound energy
of vehicles.”
The new type of battery works using a sound absorbing pad that vibrates when hit by sound
waves. This vibration is then transferred to tiny pieces of zinc oxide wire, which contract
and release with the vibrations, turning the energy of sound into electricity.
The battery is still in small-scale form, meaning it only works with very low-power devices.
But the research team is confident that its energy-scavenging creation will find its way onto a
smartphone specification list in the not-too-distant future.
9
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