The document discusses the overhead projector (OHP), including its basic parts like the lamp, blower, and projection stage. It describes the three main types of OHP software: continuous roll, slide transparency, and computer disk. The document provides recommendations for font sizes used in OHP materials and tips for effective utilization, such as limiting information per transparency and using a clear layout. Various display techniques are mentioned, including progressive disclosure, overlays, and animation. Students will do a group activity presenting a short lecture using an OHP.

1. The Overhead Projector
EPE 222 Educational Technology 1

2. 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

3. << Opaque Projector
Slide Projector >>

4. Parts of an OHP
1. Lamp & reflector
2. Blower
3. Base mirror
4. Projection stage
5. Upper section

5. Three (3) Types of OHP Software
1. Continuous Roll
2. Slide Transparency
3. Computer Disk

6. 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.

7. 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.

8. Useful Display Techniques
• Progressive Disclosure

9. Useful Display Techniques
• Use of overlays

10. How to design OHP
transparencies…

11. How to design OHP
transparencies…

12. 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

13. How to Utilize OHP?
VIDEO 1
VIDEO 2
VIDEO 3
VIDEO 4
VIDEO 5

14. 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