Hello Joel,
The Tamil Nadu State Information Commission had directed the Tamil University in Thanjavur to translate the National Council of Educational Research and Training (NCERT) textbooks for Physics, Chemistry, History, Geography, Economics and Mathematics for 6th to 12th Standards, which are currently available only in English and Hindi.
You can visit to the official website of NCERT to find possible archives regarding the same, via the following link:
http://www.ncert.nic.in/rightside/links/tamil_hnd.html
Another possible option to browse NCERT in Tamil is to translate the soft copy via Google Translate which would return 80% of the equivalent translation.
Hope this helps you. We wish you the best for your future endeavours!
Regards
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