The document provides examples of different types of visual aids that can be used for educational presentations including whiteboards, flip charts, overhead transparencies, slides, videos, and models. It also includes instructions for simple science experiments that can be demonstrated using visual aids, such as making a miniature tornado in a bottle, demonstrating the water cycle, growing yeast, inflating a balloon with a chemical reaction, creating lava in a cup, and building a basic greenhouse. The document suggests considering factors like audience size, the material's suitability for visual representation, having backups, repetition of the presentation, and how activities could benefit from different visual aids.

1. Visual Aids
Principals in preparation
Sujeewa Polgampala
Siyane National College
Veyangoda

2. Education is Womb to Tomb

4. Whiteboard
Flip Chart
Overhead Transparencies
35mm Slides
Video Tapes
Multimedia
Models and Simulators
Common Types of Visual Aids

5. a Number of students / size of the room
b. What of your material lends itself to visual
aids?
c. Will you need backups for your visuals?
d. Will this be a presentation that I will give
again?
e. Are there any activities that certain visual aids
would support better than others?

7. Make a Tornado in a Bottle
What you'll need:
•Water
•A clear plastic bottle
with a cap (that won't
leak)
•Glitter
•Dish washing liquid

8. Instructions:
1.Fill the plastic bottle with water until it reaches
around three quarters full.
2.Add a few drops of dish washing liquid.
3.Sprinkle in a few pinches of glitter (this will
make your tornado easier to see).
4.Put the cap on tightly.
5.Turn the bottle upside down and hold it by the
neck. Quickly spin the bottle in a circular motion
for a few seconds, stop and look inside to see if
you can see a mini tornado forming in the water.
You might need to try it a few times before you
get it working properly.

10. Water cycle

11. •A packet of yeast (available in
the grocery store)
•A small, clean, clear, plastic
soda bottle (16 oz. or smaller)
•1 teaspoon of sugar
•Some warm water
•A small balloon

12. Science Experiment: Use
vinegar and baking soda to
air up a balloon!

13. *A clear drinking glass
* 1/4 cup vegetable oil
* 1 teaspoon salt
* Water
* Food coloring (optional)
Lava in a cup

14. Green House

15. •A large iron nail
(about 3 inches)
•About 3 feet of
THIN COATED
copper wire
•A fresh D size
battery
•Some paper clips
or other small
magnetic objects