The Overhead Projector

EPE 222 Educational Technology 1

The Overhead Projector (OHP Hardware)

There are other kinds of projectors like OPAQUE PROJECTOR and SLIDE PROJECTOR. The overhead projector seems more available in schools

<< Opaque Projector

Slide Projector >>

Parts of an OHP

1. Lamp & reflector

2. Blower

3. Base mirror

4. Projection stage

5. Upper section

Three (3) Types of OHP Software

1. Continuous Roll

2. Slide Transparency

3. Computer Disk

The recommended sizes for different forms of printing and writing are as follows:

• lower-case printing: just over 1/8 inch (3mm) (excluding ascenders and descenders)

• upper-case printing: just over 1/4 inch (6mm) • handwriting: as for lower-case printing.

Useful Tips in Utilizing an OHP Projector

1. Do not try to put too much information on a single transparency.

2. Use a clear, systematic layout .

3. Make sure that all the material will be seen when the transparency is projected.

Useful Display Techniques

• Progressive Disclosure

Useful Display Techniques

• Use of overlays

How to design OHP transparencies…

How to design OHP transparencies…

Useful Display Techniques

• Use of animation

Although the overhead projector is classed as a 'still-visual display' system, it is in fact possible to add an element of animation to certain types of OHP display.

Sample OHP Animation

How to Utilize OHP?

VIDEO 1

VIDEO 2

VIDEO 3

VIDEO 4

VIDEO 5

Activity 2 Midterm (Group)

Each group need to prepare a brief/short lecture by using the OHP (10 mins).

They will be evaluated based on the techniques they will showcase.

A group need to have a minimum of two (2) transparencies and only one (1) presenter per group.

Presentation: Next Meeting