Audio visual aids 2

 INTRODUCTION
 Definition of Audio visual aids
 Purpose and Importance of Audio Visual Aids
 Factors Affecting Media Selection
 Types of Audiovisual aids
1- AUDIO-AIDS
2- Visual aids
3- AUDIO-VISUAL AIDS

 Education is necessary for everyone.
 Teaching and learning are important elements of education.
 The teacher use different methods and materials to teach their students
and their effective learning.
 Audio visual aids are effective tools for teaching and learning.
 In audio visual teaching, attention is paid to the audio and visual
presentation of the material with the goal of effective learning and
retention.

 Using audio visual technology sensory experiences are stimulated. This
method includes pictures, slides, radios, videos and other audio visual
tools.
 In the current digital world, audio visual aids have grown exponentially
with several multimedia such as educational DVDs, power point, online
lectures.
 The objective of audio visual aids is to enhance teacher’s ability to
present lesson in simple, effective and easy to understand for students.
 The outcome is to promote audiovisual material in secondary school.
 The visual instruments make ideas more concrete to the learners.

Definition :-
 Audio visual aids are any device which can be used to
make the learning experience more concrete, more
realistic and more dynamic.
 Audio visual aid is the combination of two
media:
› Auditory aids: Any instructional device that can be heard
but not seen. E.g. Tape record, Microphones, Ear phones
etc..
› Visual aids: Any instructional device that can be seen,
but not heard. Slide, film strips etc..

30% of what we SEE
We Learn and Retain:
10% of what we READ
20% of what we HEAR
50% of what we HEAR and SEE
Higher levels of retention can be achieved through active
involvement in learning.

 Best motivation.
 Clear image.
 Save energy and time.
 Antidote of the disease of verbal instructions.
 Capture attention.
 Reinforcement to learner.
 Positive transfer of learning.
 Gain & hold student interest.
 Increase understanding and retention.
 Stimulate the development of understanding and attitudes.

1. Domain of educational objectives “relevant to
subject”.
2. Level of education of learner.
3. Age of learner.
4. Availability or according to facilities of
equipment and resources.

5. Cost of equipment.
6. Environment “equipped or not”; as:
size of place, electricity etc.
7. Ability, interest & skills of teacher to use
some sort of media.
8. Number of learner.

 AUDIO-AIDS
 VISUAL-AIDS
(projected / non projected)
 AUDIO-VISUAL AIDS

1- AUDIO-AIDS
 The first category of aids is Audio-Aids.
 Audio-aids help in developing the listening skill of
an educated .
 Audio-aids are those aids which can be only
listened.
Examples, of such types of aids include, radio,
recording
 One way communication: no possibility of students
feed back

 Radio program is called education radio-broadcasts, which
provides opportunity to the teachers and students to listen to the
program and take notes on them .
 As a follow-up activity, these programs also supplement the
presentation of a teacher in the classroom, whenever they are
deemed fit for the discourse.

Advantages
1- widely available.
2- beneficial to visually impaired and low -literate
patients may be listened to repeatedly.
3- most forms very practical, cheap, small, and
portable.

 Disadvantage
relies only on sense of hearing some forms may
be expensive lack of opportunity for interaction
between instructor and learner.

 A tape recorder consists mainly of three parts-the
microphone, the amplifier and the receiver .
 The talks of eminent personalities, educationists,
academicians and scientists can be recorded and
reproduced in the classroom through this teaching
aid

Advantages:
 Recording can play when we required
 the speech of a person can be recorded at any time
 It can be used for introducing as well as summarizing
the topic
 To evaluate the speech defect in one’s own speech
 To teach good pronunciation in foreign language
 Recording can be stopped at will

 (a) Projected
PROJECTED VISUAL AIDS
I. Definition of terms:
Projected visual aids are pictures shown upon a
screen by use of a certain type of machine such as a
filmstrip projector, slide projector , overhead projector .
 PROJECTED materials are useful for groups of 30
people or less.

1- Most effectively used with groups
2- may be especially beneficial to hearing-impaired , low-
literate patients
3- excellent for use in teaching psychomotor skills

1- lack of flexibility due to static content for
some forms.
2- some forms may be expensive.
3- requires darkened room for some forms.
4- requires special equipment for use

OVER HEAD PROJECTOR:
The over head projector is the most used in all a.v. aids.
It projects transparencies with brilliant screen images suitable for
use in a lighted room.

 Tips during presentation :
• Keep the screen above the heads of the participants.
• Keep the screen in full view of participants
• Make sure you are not blocking any ones view when presenting.
• Darken the room appropriately by blocking out sunshine and
dimming near by.
• Turn the screen off between slides if you are going to talk for more
than two.
• Talk to the audience, not to the screen

 concepts and sequences in a subject matter area.
 To make marginal notes on the transparencies for the use of the
teacher that can carry with out exposing them to the class.
 To test students performances, while other classmates observe.
 To show relationships by means of transparent overlays in
contrasting color.
 To give the illusion of motion in the transparency.

 It permits the teacher to stand in front of the class while using
the projector, thus enabling her to point out features appearing
on the screen by pointing to the materials at the projector it
self and at the same time, to observe the students reactions to
her discussion.
 Gains attention of the student

 Transparencies, are popular instructional medium.
 They are simple to prepare and easy to prepare and easy to operate
with the over head projector which is light weight.
 A 10*10 inches sheet with printed, written or drawn material is placed
on the platform of the projector and a large image is projected on a
screen behind you.
 The projector is used from near to the front of the room with the
teacher standing or sitting beside facing the student.

 Have one main idea an each transparency.
 Include only related figures and diagrams.
 Use simple lettering style in writing.
 Use diagrams in proposition to its lettering.
 Keep the message clear and simple.
 Emphasize the key messages.
 Use color and lettering with discretion.

 Permits face to face interaction with the students.
 Can be used in daylight conditions.
 Can present information in systemic developmental sequences.
 Requires limited planning and can be prepared in variety of
inexpensive methods.
 Easily available.

 slide is a small piece of transparent material on which a single
pictorial image or scene or graphic image has been
photographed or reproduced otherwise.
 Slides are a form of projected

 media that are easy to prepare.
 They are still pictures on positive film which you can process
and mount individually yourself or send to a film laboratory.
 The standard size of the slides is 2 “X 2 “any 35mm camera will
make satisfactory slides.

1- Requires only filming, processing and mounting by self or
laboratory.
2- Results in colorful, realistic, reproduction original subject.
3- Preparation with any 35mm camera for most uses.
4- Easy to revise and up-date.
5- Easily handled, stored and re-arranged for various uses.
6- Can be combined with tape narration or can control time for
discussion.
7- May be adapted to group or individual use

 Film strips are sequence of transparent still pictures
with individual frames on 35mm film.
 A tap recorded narration can
be synchronized with film strip.
 Each strip contains from 12 to 18 or more pictures.
 It is a fixed sequence of related stills on a roll of 35mm
film or 8mm film.

1- Preview filmstrips before using them and selected carefully to
meet the needs of the topic to be taught.
2- Show again any part of the filmstrip needing more specific study.
3- Use filmstrip to stimulate emotions, build attitudes and to point
up problems.
4- It should be introduced appropriately and its relationship to the
topic of the study brought out.
5- Use a pointer to direct attention, to specific details on the screen.

1- Discussion filmstrip : it is continuous strip of film consisting of
individual frames arranged in sequence usually with explanatory titles.
2- Sound slide film : it is similar to filmstrip but instead of explanatory
titles or spoken discussion recorded explanation is audible, which is
synchronized with the pictures.

provide action , color and sound it is best show films to groups of
30 people or less they are a useful communication medium some
films provide mainly information and they look like lectures that use
sound and visual aids.
some demonstrate skills , while others are like play and show real-
life situation.
 people can learn about new behavior , attitudes and values from
films .

1- flexible for use with different audiences.
2- widely used educational tool inexpensive , for the
most part uses visual and auditory senses.
3- powerful tool for role-modeling , demonstration ,
teaching projectors skills.

1- some commercial products may be
expensive.
2- some materials may be too long or
inappropriate for audience .

 Definition:
“ Posters are the graphic aids with short
quick and typical messages with attention
capturing paintings .”

 To provide general motivation.
 To create an esthetic or atmospheric effect.
 To communicate a more general idea. To thrust the message for
leading to action
 For the class room and community

 Brevity : message should be concise.
 Simplicity : message should be easily understandable.
 Idea : should base on single idea and it should be relevant.
 Color : suitable color and combination should be used to make the
poster attractive and eye catching.
 Display : while displaying one should be sure to find a place where
there is adequate light and where the larger population will see it.

 It attracts attention
 It conveys the message very quickly
 It does not require a detailed study.
 Good poster leads to action with good motivation
 It can stand alone and is self explanatory

 Poster does not always give enough information.
 When a poster is seen for longer time it may not
attractive.

A set of charts related to specific topic have been
tagged together and hang on a supporting stand.
The individual charts will carry a series of related
materials or messages in sequence

 Inexpensive easy to move from room to room and don’t require
electricity.
 They are small group enough that several may be used
simultaneously e.g. for small group work.
 They are possible use by teacher and student.

 Pages of information can be prepared in advance
and revealed at appropriate points on the
presentation.
 Can be converted to slides

 May require the use of graphics talent .
 Not suitable for large audience setting .
 May be difficult to transport

 Is a storytelling system that uses a board covered with flannel
fabric, usually resting on an easel, although its primary use is as
a storytelling medium, rather than as a toy

 Permits numerous and varied arrangements of visual
materials.
 Permits the use of either chart or small pieces of
material Materials can be packed and transported
complete notes.

 development of a complete story.
 Promotes conscientious planning, which must precede
the development of the material in the first place.
 Challenges one to develop symbols to portray such
things as abstractions

1- Transportation and storing of boards and materials is a problem.
Suitable tables to support boards must be available.
2- Time and cost of making material for presentation present a
problem.
3- Cost of boards themselves can't be overlooked

4- Presentation is limited a new idea involves material can be added.
5- Might tend to deter one from using other more effective methods and
techniques when it is evident that other methods might be more
appropriate.
6- To tell a complete story it often takes either too much board space or
smaller designs and materials some of which cannot be seen well

 Having the properties of a magnet, i.e. of attracting iron or steel the hard
disk is covered with a thin coat of magnetic It can be used to display
pictures, cutouts and light objects with disc magnets or magnetic
holders.

 Used frequently and repeatedly.
 prepared from available material.
 Movement of visual material is easy.
 Suitable for group participation and develop thinking.

 Limited number of learner
 Need good skills to use this technique convincingly

 The third category of aids is Audio-Visual aids.
 In these aids both the listening (ears) and viewing faculties (eyes)
are involved .
 Such aids include television programs, video films, computers and
computer-assisted instructions

 Films represent an effective instructional device to
Cato the students’ attention and create interest and
motivation among them towards effective learning.
 Educational films may be prepared on any content
material or any aspect of knowledge, and behavior

 Television is a versatile medium of transmitting education through different
programs.
 It combines the sound and sight ,thus makes the experience more concrete,
real, and immediate.
 It is an exciting means of communication.
 Useful instructional programs are being telecasted regularly for the student
community on television .

•A teacher should utilize the T.V. programs and make them
the basis for discussions on relevant occasions.
* In the health field, it has already served as powerful
advocate of healthy behavior

1- Adaptable to large and small audiences in widely distributed area.
2- Capable of gaining and maintaining attention.
3- Can stimulate emotions, build attitudes and develop problems.

1- Program expensive to produces and demands highly skilled staff.
2- Electricity required.
3- No interaction or feedback.
4- Learner must adapt to fixed schedule.

 Video is a viable aid towards effective learning and teaching.
 Teaching with the help of video is called video-aided instruction .
 Video is clearly an instructional medium that generates a much greater
amount of interest and enjoyment than the more traditional printed
material.

 Instant replay of subject material
 Permanent and reusable
 Versatile media
 Allows both the audio and visual to be recorded

 Requires practice
 May be bulky to handle all the equipment
 May distract students while they are being Videotaped

 Make sure the clip is not too long.
 While a 30-second video can illustrate your ideas in a memorable
way, anything much longer will distract attention from the speech
itself .
 Make sure the video is cued to start exactly where you want it .

 If necessary, edit the video to the precise length you need so it will
blend smoothly into your speech .
 Beware of low-resolution video.
 This is particularly important in the case of YouTube clips, which
may look fine on a computer but are blurry and distorted when
projected on a large screen or monitor.

 The use of a computer and a projector to show information,
Versions like PowerPoint tm and Corel Presentations tm, directly
produces and image on the screen, Good for showing graphics

 Handling large number of student
 Multi-dimensional learning through works and graph.
 The high storage capacity of a computer allows
completing many activities at a time.

 It lacks human and emotional factor
 Computers are very costly
 Problem in developing language

 PowerPoint uses slides with a horizontal or
"Landscape" orientation.
 The software was designed as a convenient way to
display graphical information that would support the
speaker and supplement the presentation.

 The slides themselves were never meant to be the "star
of the show". People came to hear you and be moved
or informed (or both) by you and your message.
 Don't let your message and your ability to tell a story
gets derailed by slides that are unnecessarily
complicated, busy, or full of junk.

 Projects a professional image .
 Minimal expense
 Compact and portable .
 Slide shows are easy to email .
 Visuals easily edited .
 Allows easy insertion of graphics .

 Slide show can be printed, copied and provided as
handout material during presentation .
 Expands options through the use of multimedia such
as animation, video clips and sound .

1-Prepare visual aids in advance.
2-Keep visual aids simple.
3-Make sure visual aids are large enough.
4-Use fonts that are easy to read.
5-Use a limited number of fonts.
6-Use color effectively

7-Avoid using the chalkboard.
8-Display visual aids where listener can see them.
9-Avoid passing the visual aids among the audience.
10-Display visual aids only while discussing them.
11-Talk to your audience, not to your visual aids.
12-Explain visual aids clearly and concisely.

TIPS for effective presentation :
 OUTLINE
› Present the outline of your presentation visually at the
beginning of your speech Follow the order of your outline for
the rest of the presentation .
› Only place main points on the outline slide

 Use 1-2 slides per minute of your presentation
 Write in point form, not complete sentences
 Include 4-5 points per slide
 Avoid wordiness: use key words and phrases only

Show one point at a time :
› Will help audience concentrate on what you are
saying
› Will prevent audience from reading ahead
› Will help you keep your presentation focused

 Do not use distracting animation
 Do not go overboard with the animation
 Be consistent with the animation that you use

 Use at least an 18-point font
 Use different size fonts for main points and secondary
points
 The title font is 44-point the main point font is 32-point,
and secondary points font is 28-point
 Use a standard font like Times New Roman or Arial

 If you use a small font, your audience won’t be
able to read what you have written .
 Don’t use a complicated font.
 CAPITALIZE ONLY WHEN NECESSARY.

 COLOR
 Use a color of font that contrasts sharply with the
background
Ex: blue font on white background
 Use color to reinforce the logic of your structure
Ex: light blue title and dark blue text
 Use color to emphasize a point
 But only use this occasionally

COLOR – BAD
 Using a font color that does not contrast with the
background color is hard to read
 Using color for decoration is distracting and annoying .
 Using a different color for each point is unnecessary
 Using a different color for secondary points is also
unnecessary
 Trying to be creative can also be bad

BACKGROUND
 Use backgrounds that are simple
 Use backgrounds which are light
 Use the same background consistently
throughout your presentation.

BACKGROUND – BAD
 Avoid backgrounds that are distracting or difficult to read
from
 Always be consistent with the background that you use
GRAPHS
 Use graphs rather than just charts and words
 Data in graphs are easier to comprehend & retain than are
raw data
 Trends are easier to visualize in graph form

 SPELLING AND GRAMMAR
 Proof your slides for :
› spelling mistakes
› the use of repeated words
› grammatical errors you might have make
› If English is not your first language, please have someone else
check your presentation!

CONCLUSION
 Use an effective and strong closing
 Your audience is likely to remember your last words
 Use a conclusion slide to :
 Summarize the main points of your presentation
 Provide a sense of closure

QUESTIONS
End your presentation with a simple
question slide to :
 Invite your audience to ask questions
 Provide a visual aid during question period
 Avoid ending a presentation abruptly

Audio visual aids 2

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