Teacher who believes in building basic of a subject rather than focusing on just scoring marks

I think he is a great teacher .His concepts are quite crisp and accurate .The way he teaches is phenomenal , being his student I have come a long way .I was very weak in Maths like I get generally 40-50 marks out of 100 but someone recommended Sagar sir to me .And his way of teaching is so unique and easy that I even cope up with the hard topics as well .Now I have scored 98/100 in my Boards and would definitely recommend everyone who is weak or scared of Maths just go to Sagar sir once for sure , your opinion might be different then .