Here is my reading list for you. Send these set of keywords to scholar.google.com: "instructional design" system process development design content e-learning software requirements module. Then try ACM and IEEE.

Thanks Sir,but I would like to know a bit more of deatil .Like if I were to find the design metrics of e learning software ,how do I go about it ?

Try reading http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.118.7075&rep=rep1&type=pdf

Have you searched ACM and IEEE?

You may be more familiar with object oriented methodologies which consider all parts as components and keep in high cohesion. Be that as it may, GRASP principles may help you in very consistent manner, like I have done into Mashup for e-Learning environment.

Thanks Sir,

Could you throw more light on the use of these principles

interesting idea on applying GRASP principle.. could you elaborate more on how you manage to include that pattern in? My research in text to UML diagram also include the GRASP pattern too.. But i want to know more on how e-learning utilise it..

Actually, designing reusable educational software components in which they meet GRASP pattern targets. So, gathering heterogeneous web services data together they could engaged in educational fetched data. Finally, by using triple layer designed software we exploit Mashup data to meet user's requirement.