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| Maximizing the use of LCD Projector and the Chalkboard
An LCD
projector is a type of video projector for displaying video, images or computer
data on a screen or other flat surface.
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Because they use small lamps and the ability to
project an image on any flat surface, LCD projectors tend to be smaller and
more portable than some other types of projection systems. Even so, the best
image quality is found using a blank white, grey or black (which blocks
reflected ambient light) surface, so dedicated projection screens are often
used.
Advantages
of LCD Projectors
- · Cost of LCD Projectors
- · Sharp Images
- · Greater Zoom Magnification
- · Less Power Consumption
- · Limited lifetime
- · Contrast
- · Screen-door Effect
- · Dust Issues
- · Dead Pixels
The
Chalkboard
A
Chalkboard is a reusable writing surface on which text or drawings are made
with sticks of calcium sulfate or calcium carbonate, known, when used for this
purpose, as chalk.
Except
in extremely deprived classrooms, every classroom has a chalkboard. In fact, a
school have no computer, radio, TV, etc. but it will always have a chalkboard.
Practices
that help us in effective use of Chalkboard
1. Write
clearly and legibly on the board. Take note that there are children in the last
row.
2. Have
a hard copy of your chalkboard diagram or outline
3. Do
not crowd your notes on the board.
4. Make
use of colored chalk to highlight key points. Color will also make your board
work appealing.
5. Do
not turn your back to your class while you write on the chalkboard. Write side
view as you talk. Do not lose your eye contact with the class.
6. For
the sake of order and clarity, start to write from the left side of the board
going right.
7. If
you teach the grades and you think the lines on the chalkboard are needed for
writing exercises, then provide the line for your board.
8. Look
at your board work from all corners of the room to test if pupils from all
sides of the room can read your board work.
9. If
there is glare on the chalkboard at a certain times, a curtain of the window
may solve the problem.
10. If
you need to replace your chalkboard or if you are having a new classroom with
new chalkboard suggest to the carpenter to mount the chalkboard a little
concave from left to right to avoid glare for the pupils benefit.
11. If
you need to have a board work in advance or that need to be saved for
tomorrow’s use (say a quiz or sophisticated diagram), write “Please Save” and
cover the same with a curtain.
12. Make
full use of the chalkboard. It may be a traditional educational technology but
it serves its purpose very well when used correctly.
Chalkboard
Techniques By: James W. Brown (1969)
- Sharpen your chalk to get good line quality.
- Stand with your elbow high. Move along as you write.
- Use dots as “aiming points.” This keeps writing level.
- Make all writing or printing between 2 and 4 inches high for legibility.
- When using colored chalk, use soft chalk so that it can be erased easily.
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