TOPIC: PREPARATION AND USE OF NON-PROJECTED A-V AIDS

BY- PRADEEP Y K

CHARTS Usual materials required to prepare charts are sheets of thick white or light colored paper, fiber tipped round point and chisel point color markers, graphic materials, scissors, drawing aids and adhesives. Before making one should plan the contents in terms of objectives and decide the layout.

The following points must be observed while preparing a chart:1. ->The size of the chart, size of letters and

contrast of display material should be such that it is readable by farthest viewer.

->Standard paper in sizes 90x60cm and 70x55cm is suitable for most purposes.

->The size of letters for captions, labels and keywords written should be 2&3cm for a class room of depth 6m.

->The line thickness should be 2&3mm. the display material should be contrasted with background.-> Light colored chart papers are better suited for dark colored pens. ->Flat pictures and material from books should be enlarged sufficiently before planning on charts.

• Simple hand drawn charts with non-decorative lettering are more effective than elaborately drawn or machine made charts.

• One chart should convey one idea or one principle. Charts crowded with information are less effective.

• Numerical data should be presented in the form of tables. Relationship between two or more variable are better demonstrated by drawing graphs.

• Classification, organization and processes are better represented by means of flow diagrams.

• Colors should be used meaningfully i.e. to stimulate real colors to highlight.

EFFECTIVE USE OF CHARTS• Single sheet chart must be shown when necessary.

• It should be displayed before its needed for teaching.

• When a chart is to be used in the classroom, the teacher should make sure that there is provision for hanging a chart at a perfect point.

• Teacher should use a pointer to point out specific facts in the chart.

• Charts should be carefully stored and preserved for use in future.

PICTURESPictures are most commonly available graphic aids. Pictures include photographs, paintings, illustrations clipped from magazines, newspapers, etc.

1. The picture can be flashed in front of the class and related questions asked to initiate the lesson.

A series of pictures related to a lesson can be displayed in the classroom to arouse the curiosity and interest before lesson begins on the topic.

2. The related pictures if they are small, can be passed around in the class for students to have look at them and related question asked to initiate the discussion.

3. The picture should be large enough for the whole class to see it properly.

4. The picture must have clear details for arresting attention and interest.

5. The picture should be related to the lesson and meaningful for students.

6. The picture should arouse curiosity, imagination and thinking.

7. The picture should be authentic and identifiable.

8. The picture should be able to build up the proper learning environment.

9. The picture should lead class to purposeful activity.

DIAGRAMS/DRAWING

A diagram is the simplified drawing designed to show interrelationship primarily by means of lines as symbols. E.g. science figures, geometry designs, facial expressions, etc.

STANDARD OF A GOOD DIAGRAM>Technically correct>Neatly drawn in proper proportions>Well labeled and explained>It can be moved and seen from all the angles

PREPARATION OF DIAGRAM Teacher should keep following things in mind:

Diagram to be large enough to be seen by whole class.

Make the outline features of diagrams sharp.

Include only relevant and essential parts of diagrams pertaining to topic.

Caption and label the diagrams boldly.

*The diagram should be to the scale and proportional.

MAPSA map is a graphical aid representing the proportionately as a diagram, the surface of the earth, world. Map is always drawn to a scale which is mentioned on one corner of it. Every map should have the following description on it• A caption or title• A grid• A keyThese days colorful maps are commercially available.

GRAPHS Graphs are the visual teaching aids for presenting statistical information and contrasting the trends or changes of certain attributes.

There are mainly 3 types of graphs:

1. Bar graph

2. Line graph

3. Pie graph

1. Bar graph-

PREPARING A BAR GRAPH• Before making the bar chart make a rough sketch of it in notebook.

• For drawing the bar graph use the chart paper of 50x72cm size.

• Use two different colors for the two contrasting groups.

• The bars should be equi-spaced.

• Write the key to the bar graph in a box on the right hand side corner of the chart paper.

• Number specifying the magnitude of the bars should be on the top on the bars.

2. LINE GRAPHA free hand smooth line through various points indicating the instantaneous values of two variables at various moments is called line graph.PREPARATION1. Sketch pens or marker pens can be used

to write the caption.

2. Show X axis, Y axis and origin.

3. Scale along X axis, scale along Y axis variable along and actual curve joining different points.

 

3. PIE GRAPH This graph is usually shown as a disc or a circle divided into sectors of different angles to represent the fractions or percentage of the divisions of a distributive attribute.

  PREPARING A PIE GRAPH• Find out angles from the percentage or fractions

• Draw out on a chart paper of full size using a big compass carrying a sketch or marker pen.

• Divide the circle into appropriate sectors using the protractor.

• Color each section and write the corresponding percentage it represents.

• Caption the pie graph with a descriptive title.

CARTOONSA cartoon is humorous caricature which gives a subtle message. It makes learning more interesting and effective.USES• It is simple, clear which tells story without too much explanation.• The symbol used is familiar and represent a concept or idea to which students can react intellectually.• A cartoon can be used to motivate students to start a discussion.• A cartoon can be used for making lesson lively and interesting.

FLASH CARDSFlash cards are small cards of generally 25x30 cm size which are shown across a message or an idea.

PREPARATION OF FLASH CARDS• Cut a chart paper and cut it into 4 parts to get flash cards.

• Write the content on it either in the free hand writing or using lettering stencils and sketch pen.

• The height of writing on the flash card is to be approximate so that the whole class can see the flash card properly.

USING FLASH CARDS• Give brief introduction about the lesson to students.

• Give instructions to students about their actions while you flash the cards.

• Flash the cards in front of the class by holding high with both hands so that all students can see.

• Let the respond as per instructions already given.

• Add more information to the student responses.

• Test the learning by additional flash cards.

• Review the lesson by selectively using flash cards.

DISPLAY BOARDS AS TEACHING AIDS> BLACKBOARD / CHALKBOARD > FLANNEL BOARD

BLACKBOARD / CHALKBOARDUSING BLACKBOARD / CHALKBOARDFollowing points should be kept in mind to use chalkboard effectively:1. Write clearly in cursive handwriting the

important points of the topic on the chalkboard. Avoid overcrowding of information.

2. The size of lettering should be large enough (6cmX9cm) to be seen properly by the students at the rear of the class.

3. Plan chalkboard work in advance in simple brief phrases or keywords.

4. The classroom should be lighted properly and the chalkboard should be glare free.

5. Rub off the information already discussed in the class and noted down by the students.

6. Use shading & underlining for the stressing key words and statements.

7. A difficult illustration should be drawn before hand to save class time.

8. Use the other supplementary teaching aids to emphasize and clarify the main concepts.

9. Use color for an aesthetic appeal and for providing contrasts.

10. Use soft cloth piece or foam duster for rubbing off the chalkboard.

11. For rubbing off writing on the chalkboard, it should be rubbed vertically first and then horizontally.

12. Use pointer to draw attention to written material on board. Stand on one side of the board.

FLANNEL BOARD (a display board made of wood, chalkboard or straw covered with colored flannel or woolen cloth)USING A FLANNELBOARD 1. For telling a story, the teacher adheres the

picture on the flannel board along with a commentary or description.

2. For letter recognition and work formation during language teaching in primary classes.

3. For recognition recall testing, appropriate pictures can be used for teaching different subjects.

4. For teaching elementary lessons on numbers, a flannel board can be used effectively.

5. For showing interrelationship between different parts or steps of a process, a flannel board can be used effectively. E.g. nursing process

NON PROJECTED TEAVHING AIDS• MODELS• EXHIBITIONS• DIORAMA

MODELS- A model is a recognizable representation of real thing three dimensionally i.e. height, width, depth are felt. Examples of models:- Clay model of heart, eye, etc.

Globe and plantation Motor, generators, etc.

USE OF MODELS1. Models heighten the reality of things and make learning

direct and meaningful as they are three dimensional.2. Model illustrates the application side of certain principles

and laws.3. Models explain the complex operations in a simplified way

and thus make understanding easier.4. Models are lasting and ultimately work out to be cheaper

teaching aid.5. Reasonable size and convenient to handle.6. Models involve the use of all the five senses and thus make

learning more effective.

EXHIBITION1. Requisites/Requirements for

exhibition

2. Exhibitions should have central theme with a few sub-themes to focus attention to a particular concept.

3. The exhibits should be clean and labeled properly.

4. The exhibits should be so placed that visitors can see them.

5. The place should be well lighted.

6. To capture interest and attention of visitors both motion and sound can be utilized.

7. Exhibits should have some levers, switches, handles to be operated by visitors to see some happenings.

8. Exhibition should include a lot of demonstration as they involve deeply the students and the visitors both.

 DIORAMA- A diorama is 3-D arrangement of related objects, models and cutouts to illustrate a central theme or concept.Ex. A harvest scene, a planting scene, a street scene, etc.

PREPARATION Box is made using a thick board, a semi-cylindrical form with a cellophane front covering.

Curved surface should have a painting to show the background.

Top of box covered with hard board carrying a 100 watt bulb.

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CONCLUSIONKnowledge regarding preparing and

use of non-projected A-V Aids is necessary for a teacher to teach effectively which enhances learning of a student/learner.

BIBLIOGRAPHY1. Basavantappa BT. Nursing education.

1sted. New Delhi(India): Jaypee brothers Medical publication(P)ltd; 2003. P.28-42.

2. Neeraja KP. Textbook of nursing education. 1sted. New Delhi(India): Jaypee brothers Medical publication(P)ltd; 2003. P.211-20.