Dear,

B.ed is Bachelor in Education is itself a training course which you have to do after completing your graduation only. But, you can do diploma in Education that is D.el.ed (Diploma in Elementary Education) which you can pursue after doing 12th only.

Also, you have asked about Maths as a learning subject. Maths is not essential to take as a learning subject. You have to choose the subjects as per your preference that means the subjects you have studied previously or you have interest in, you can choose that subjects too.

And, the Best colleges for B.ed in South Mumbai are:-

• Aishabai College of Education
• Gandhi Shikshan Bhavan's Surajba College Of Education
• Chembur Sarvankash Shikshan Shastra Mahavidyalaya
• St. Teresa's Institute Of Education
• Smt. Kapila Khandwala College Of Education
• Pillai College of Education and Research
• SREE NARAYANA GURU COLLEGE OF EDUCATION
• Hansraj Jivandas College of Education
• St. Xavier's Institute of Education

Hope this sorted your query.

All the Best!!