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Universidad Autónoma de Chiriquí Faculty of Humanities School of English Materials Development-Eng 420 Transparencies (OHP) Professor: Marisol Barraza Done by: Gantes & Montero May 18th, 2016 1

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Universidad Autónoma de Chiriquí

Faculty of Humanities

School of English

Materials Development-Eng 420

Transparencies (OHP)Professor: Marisol Barraza

Done by: Gantes & Montero

May 18th, 2016 1

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IntroductionOverhead Projector was created by Jules Duboscq, in 1870s.Used during the Second World War Used as a teaching tool since 1950s.Become popular easy to used Provides an interactive environment for educators.

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Table of Contents Definitions Parts of the OHP How the OHP can be used in different instructional situations

Advantages of using OHP Disadvantages of using OHP Guideliness for use OHP

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Table of Contents Standards in using OHP Designing OHP transparencies-basic principles

Producing computer generated OHP materials Display techniques Tips for Effective use of OHP Materials Conclusion Reference page

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Definitions

Overhead Projector: machine designed to project an

image, text, and drawings onto a small

screen or whiteboard

Transparencies: pages transparent and

flexible used to place information and images

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Parts of the OHP

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How the OHP can be used in different Instructional Situation

Expository teaching of

virtually any type

Group learning situations

Enabling members of a group

to display material that they

themselves have produced

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How the OHP can be used in different Instructional Situation

To present activity plan or objectives

To show tables

To systematize the information to be conveyed

To list brain-storming ideas

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Advantages of using OHP

It is portable

Get transparency materials in low cost

Located in front of the room

Used in a room with normal lighting

It is simple to operate

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Advantages of using OHP

Used as a chalkboard or market board

Modify transparencies during the presentation

You can write without turning your back

Maintain eye contact

Audiences can follow handout or take notes

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Disadvantages of using OHP

It requires a power supply

Needs suitable surface about four square feet

Need spare bulb in case unexpected events

Many users do not give sufficient thought

to the production of their display material

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Disadvantages of using OHP

Tendency to include too much information in

a single frame

Teachers or lectures overuse the OHP

Difficult to transport because of its weigh

Cost of materials required to operate them

Used with small audiences.

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Guideliness-How to use the OHPLocated it in a place where everybody

can see the screen.

Arrange the projector and screen in a way

to minimize it. It should have appropriate

angles in horizontal and vertical planes.

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Guideliness-How to use the OHP

Adjust the distance from projector to

screen so the image fills the full area

Make sure the acetate and open head

surface are clear and free of dust or dirty

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Standards in using OHP

Make the text, illustrations or pictures in

your transparencies big enough

Schematize: present essential points, one

transparency every 2 or 3 minutes

Use a pointer to emphasize points on the

acetate

Plan for a dramatic presentation

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Standards in using OHP Check visibility; do not block the screen

Plan your narration.

Turn on the lamp only if there is

a transparency on the projector

Put off the projector for prolonged explanations,

or when it is not needed

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Designing OHP transparencies-basic principles

There two basic Principles:1. Do not try to put too much

information on a single transparency.

2. Use a clear, systematic layout.

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Producing computer generated OHP materials

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Use computer to design and produce OHT

Create both alphanumeric and graphic

materials and print them out in OHP

transparency form - in full color, and with

whatever size of lettering is wanted

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Display Techniques

a) Progressive DisclosureInvolves covering up all or part of the material on a given transparency,and progressively revealing the material as the presentation proceeds

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Display techniques

b) Framing TransparenciesEssential information placed visible for your audience and notes written for the teacher’s support

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Display Techniques

c) Use of overlaysWhole area of transparency is revealed from the start, with additional information being added to the original display by superimposing further transparencies on the original.

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Display Techniques

c) Use of Overlays 1. To lay separate transparencies

2. Make use of hinged overlays

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Tips to use OHP Effectively

1.Just write key points on transparencies

2.Keep transparencies simple - 7X7 Rule

3.Use 18 point type- no more than two type styles

4.Mix upper and lower-case letters for easy readability

5.Do not use exclamation marks, they look like number one.

6.See your overheads from all angles

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Tips to use OHP Effectively

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7. Do not turn off all room lights

8. Turn projector lamp off during discussions

9. Never stand anything between the projection and screen

10.Give people time to read

11.Talk to your listeners not the screen

12. Before moving wait for period time to cool

Down - bulb may explode.

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Materials

a)Transparenciesb)Markersc)Rulerd)Cleaning suppliese)Bulbs

f) A pointer

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Conclusion OHP is a useful tool to project

information for a small audience.

It provides some advantages using it

as well as some disadvantages.

There are some usage principles

teachers should follow to make its

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References

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Aceret, R. (n.d.). The Overhead Projector: Advantages and Standards. Educational Technology. Retrieved from http://ed-tech124.blogspot.com/2013/08/the-overhead-projector-ohp.html

 Corey, W. (1999).Overhead projector usage. Business and professional

toastmasters, club #1169. Retrieved from http://regainthemagic.com/BPToastmasters/overhead.html

 

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References

Ellington, H. (1987). A Guide to the use of the overhead projector. Teaching and learning higher education. Retrieved from http://files.eric.ed.gov/fulltext/ED289497.pdf

 Mott, E. (1983). How to make transparencies for the overhead projector. Azcentral.

Retrieved from http://yourbusiness.azcentral.com/make-transparencies-overhead-projector-1185.html

 Sinan, C. (1991). Using overhead projector in the classroom: Advantages and

disadvantages. Csinan Blog. Retrieveed from https://csinan.wordpress.com/2013/04/11/47/

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