Types of teaching aids

Types of teaching aids
First, educational transparencies
The use of transparencies teacher education is beating, cruel use of teaching aids and employment in the educational field in order to achieve successful communication education, and educational transparencies can be defined as: -
Definition of educational transparencies:
A knowledge-based content for reference material, containing elements (ideas) Home particular subject, to be submitted to the target group of learners through the OHP.
• types of educational transparencies by content:
Transparencies can be classified on the basis of educational content to:
1 – written transparencies.
2 –drawn transparencies.
3 – transparencies drawn and written.
As it can be classified on the basis of the shape and composition to:
1 – transparencies composed of a single layer.
2 – transparency is composed of a single layer, but covered.
3 – transparency is composed of more than one layer.
• types of transparencies according to the method of use:
1. transparencies to write them a private pens (pens with a head made of material visible pens know transparencies), which are two type in the form of A4 and type in the form of paper and reel connected to exposure in connection.
2. transparencies thermal copies that are used in thermal printing machines.
3. special transparencies imaging machines where the paper placed in the place of the camera and are frequently used in the filming of Quranic verses and topics of single color, multiplication tables and other computational processes that do not have any multiple colors.
4. Special computerized transparencies which is of two types:
1. Type of laser printers.
2. Type other color printers known as DESKJET Among the most famous brands of HP printers.
Examples of the production of educational transparencies hand means the following.
1 – the production of educational transparencies manual way (transparencies manual).
Here we need to have a special transparency called hand to transparency and to the origin is located on a dark paper to be transferred to transparency and hand to a private writing on transparency handmade pens and be the kind of hard and need frame to install the transparency it after completion because the frame keeps the transparency as we can record the subject of transparency Thus, what the teacher only put hand on the original transparency and carry out regular transparency.
2 – Production of educational thermal transparencies.
Here we will use thermal copies and transparency of special machine so-called thermal transparent and to the origin to be transferred to such transparency and to the window to prove it transparency, and then the teacher put transparency on the origin and enter through the private thermal copying machine and then wait for exit from the other side of the device has been printed on a transparency and then installs it on the frame. Preferably before the original entry with thermal transparency traffic on all originally penciled content, because this device works infrared that can not penetrate the material lead-and so the clarity of content in the end on the thermal print transparency will be better, and generally there are thermal Duplicators counter the more underestimated value of the number on the counter whenever exposed thermal origin and transparency is greater than the amount of radiation to the infrared which helps us to increase the visibility of thermal printed on the transparency of educational content.
 but how to differentiate between transparency manual thermal and transparency?
Using the following differences: -
1 – Transparency manual thicker than the thermal transparency.
2 – usually thermal transparency come severed (Parwmh) in one of the four corners.
3 – usually comes thermal color transparency, transparency does not come hand-colored.
What better production of educational transparencies way vertical or horizontal way? And why?
The best is produced in a horizontal manner, and for the following reasons:
1 – in order to avoid and excluded from accompanying the device defect which will be presented by the Transparency later, and this defect is known defect angular deviation, we find that the upper side of the rectangle Lighted emerging from the largest organ in the size of the lower leg which will affect the contents of transparency when viewed in a manner vertical, We can cry from this defect by tilting the screen that displays the content of the top forward even moderate somewhat Dhalaan upper and lower, but some teachers use the separation wall as a screen display of this device which we can not deal with this defect so preferably produced in a horizontal manner.
2 – Some classrooms are characterized Bdno upper ceiling, and if they are prepared in a manner transparent to head in some of the contents of transparency is likely to distributed between the front wall of the students and the upper ceiling of the separation, which would upset the contents of transparency, so it’s best production in a horizontal manner.
The teacher can use any transparent material through which the light performs and writes directly in front of his students, especially when you put some inherent comments to explain the teacher. Not necessarily the use of a special type of transparencies.
Production transparencies by the camera:
The teacher can produce transparencies that they want during the filming of regular topic on the camera and put transparencies imaging

Transparencies Computer
The production of transparencies computer, is one of the ways the production of educational transparencies ways mechanism, but this method of modern methods used by the teacher in the production of educational transparencies, and this method is characterized by several features as follows: -
1 – do not require special skill when produced.
2 – non-compliance with certain criteria as the size of the font and the height etc.
3 – To ensure the clarity of content, and to ensure quality output.

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