Lesson 14

Maximizing the use of the overhead projector and the chalk board

“Indeed, in no…country have I ever seen a good school without a black board or a successful teacher who did not use it frequently” –Horace Mann, noted American Educator.

Chalkboard techniques:

 a. Sharpen your chalk to get good line quality.

b. Stand with your elbow high, move along as you write.

c. Use dots as “Aiming points” this keeps writing level.

d. Make all writing or printing between 2 and 4 inches high for legibility.

e. When using colored chalk, use soft chalk so that it can be erased easily.

The Overhead Projector (OHP) Techniques

Among the outstanding attributes of overhead projection are the many techniques that can be used to present information and control the sequence of a presentation. Keep in mind these features of overhead projection.

You can show pictures and diagrams using a pointer to direct attention to a detail.

You can use felt pen or waxed based pencil to add details. It can easily be removed by a soft cloth.

You can control the rate of presenting information by covering with an opaque material and exposing the data as you discuss. This is known as the progressive disclosure technique.