As-Salaamu Alaikum.

I am an Arabic and Quran teacher at an Islamic School in Memphis , TN.   We started going over the rules of Tajweed in Ramadan as part of a Quran centric curriculum during that blessed month.  Alhamdu Lillah I believe I benefited greatly as well as the students from your site.  I was using two major sources one was a book in Arabic called "Al-Mukhtasarul-mufeed fee ahkaamit-tajweed" by Muhammad Hasan Al-Himsi and your site however I noticed a couple differences between your site and the book I was using.

1) On the issue of Medd-ul-badal he classified it as Aslee and you classified it as Far'ee why is this?

2) On the issue of Aqwaa as-sababain I was a little confused do we choose the stronger of the two only when the rule conflicts for example in the ayah "innaa bura aa uw minkum" in example two you stated that you could read the Madd Aarid six harakat if this was your practice.  But why would Madd Wajib Muttasil not take precedence over
it since it is considered stronger?  I hope that made sense...

I have some more questions but I don't want to over burden you, may Allah reward you for your efforts....Ameen

Answer

Wa alaikum assalaam wa rahmatu Allahi wa barakatuh.  Jazakum Allahu khairan and may Allah grant us and you with more beneficial knowledge, and grant your school all success. 

1.  Some scholars classify  as  and others in the   category, and there is something to be held in both opinions.  Since Hafs only lengthens  two vowel counts, it can be categorized as  which is two vowel counts.  On the other hand, the reason for  is a hamzah and in the reading of Warsh it can be lengthened two, four, or six counts, is could be also categorized as in .  We do not have a problem with either category for the qira'ah of Hafs, since both have correctness in the reasons for the categorization.  

2. Masha’ Allah, it is clear you read and understood the lessons on well. Your question is a very common question, but easily explained.  When  is read as six vowel counts in length, it is considered to be similar to which as you know is six vowel counts, and it then takes on the characteristic of being the strongest of all the mudood.  That is the reason it takes precedence when it is being read as six vowel counts in the usual reading and we are stopping on a word with a hamzah on the end and a medd letter preceding it, such as the word . 

Feel free to ask more questions, but please understand we may not be able to answer them all immediately. May Allah reward you for your teaching and make you of the best of the Muslim nation, those we learn the Qur’an and teach it.

Wa assalaam