hi,

see as per the ugc rules students can pursue one regular course along with a distance education course at the same time . so while doing full time/ regular course of  m.sc you may go for b.ed course in distance education mode.

I have mentioned some of the distance education Institute name which offer b.ed course,

IGNOU - Indira Gandhi National Open University

UP Rajarshi Tandon Open University (UPRTOU)

Directorate Of Distance Education, University Of Jammu

Indira Gandhi National Open University, Ahmedabad Regional Center

Annamalai University

National Correspondence College

Rabindranath Tagore University

Directorate of Distance Education, Kurukshetra University