सार

Introduction-Mathematics is an important subject in the school curriculum. It is more 
closely related to our daily life as compared to other subjects. Except for our mother tongue, 
there is no other subject which is more closely related to our daily life as mathematics. 
According to National Policy on Education (1986) "Mathematics should be visualized as the 
vehicle to train a child to think, reason, analyze and articulate logically".  
Objectives-The objectives of the study are: 1. To develop self-learning instructional material of 
mathematics for class eight students. 2. To find out the effect of the developed self-learning 
instructional material of mathematics on academic achievement in mathematics of class eight 
students.  
Method and Procedure-The researcher used the developmental method followed by the 
experimental method. So the research design consisted of two phases, viz., Developmental phase 
and Experimental phase. The selection of the school was kept purposive because only co
education school having two sections could meet the researcher‘s experimental needs. Self- 
Made Rating Scale: For Validation of Self Learning instructional material (SLIM) in 
mathematics and Academic achievement test (Post-test) of mathematics used by the researcher. 
Result and Discussion- Finally, concluded that significant effect of self-learning instructional 
material was found on academic achievement in mathematics of class eight students. 
Conclusion- The main finding of the study was that there was a significant effect of the teaching 
based on self-learning instructional material. It was found that the students who were exposed to 
the self- learning instructional material performed significantly better in mathematics than the 
students who were taught by conventional method. It is due to the development of mental 
faculties of the students by reasoning, logical thinking, self-motivation (applications of self
learning instructional material). 
Implication- Studying mathematics by using Self-learning instructional material will help the 
students to learn mathematics in a systematic way further it will help the students to learn with 
their own capacity and their own speed.