The idea of assessment is to get the general layout or the situation in hand. Every profession has their assessment methodologies which relies on various process like the doctors various tests, the IT takes the diagnostic test, etc.. likewise the teacher is also supposed to take the assessment of the students. Now there can be variation in the procedure or the technique of this but the result is to understand the students better and knit the learning process to the need of the students. Hence increasing the effectiveness and better management of the time.
The assessment can be made fun by different interactions technique or it can be just made by test sheet, but the whole idea is to get the teacher ahead of the students which will help them to better find the right tune for each students and thus by making the learning process more definite.
Assessment & evaluations are two sides of the same coin because we evaluate to have assessment over the situation.
Ajima 