Its all from the basic principles. Most accurate is either the one original or completely advanced. The more we learn the more we understand about our scripts, etymology and grammar. As mentioned earlier Indian scripts got a common platform hence can be mapped to eachother. What most difficult combination we can take to understand than the Tamil script to others? For example, we will map it to Devanagari to understand. Many says its totally different. The pre -assumption has no basis till we really get into it. When curiously asked we get a probable answer. If we study in parallel then we realise the similarity.
Lets take vowels and variations for today in the class to understand. The below picture is self elaborative. Now my classroom look at it in the form of symbols.
Similarly we can compare Telegu, Malayalam or any other scripts. India got common philosophy and common framework with numerous architecture. If we analysis the extreme to justify the rest will fall in easily. We will study about consonants in the next one. I still ask my friends from TamilNadu- MahaNadu means the same – A Rashtra – Maharashtra or Tamilrashtra!