From the past and the definition of technology is developed but without  any understand until  today. Today technology is the way of communication in the world and we observed it in many fields special in education so, when enter it to help the people to get information addition word "Instructional" to technology to be "Instructional Technology " . It is materials and scientific method that used in teaching to achieve the desired outcomes for learners . In addition to solve the problems or serve some purpose . Also in the other way we can define it in the way of process and products . But it's very difficult to define of  instructional technology in one way because this field is growing and changing every day . 
The life is developed and the people need some things that help them so , we observed many things under instructional technology that help them . For Example , use computers , slide projector , over head projector and  etc..
They help the learners to get good education . The basic of teaching is beginning from teach the learners by use actual object  then, go to modified object, model of an object, picture of an object, and to drawing of an object.
Instructional technology enter to teaching aids and it's achieve the desired outcomes for both learners and teachers. Also, to achieve good outcomes by using it ,the teachers must have clear purpose when used teaching aids . Must from the teachers know how to used this technology in the front of learners .
There are many instructional technology  in the teaching fields. For example, white / black board , models , map , graphs , charts , posters , CD /DVD that make the teaching very easy for students and teachers .
By using instructional technology the teachers can;