I see that my old friend Lemuria is in there... Really, this is about as bad as creationism in the west - hopelessly outdated theory kept alive for political/religious reasons...
Is this textbook online like the CBSE ones? I think one can do a thorough review/debunking of it.
Hmm, the version up at http://www.textbooksonline.tn.nic.in/Std6.htm seems to be much more sane than what's described in the article. More conservative dates for the Sangam age, a good 4 chapters on the Pallavas, though strangely, nothing on the imperial Cholas or Vijayanagara.
It still reads like a piece of Sangam age propaganda, but at least no Lemuria...
Sometime back, was asked to write a 10 page foreword for one of the govt dept's book which was scheduled to come in conjunction with the 1000th year celebrations. Half way through, the demands for certain compulsory references went wild ( you know what i am talking off) - was happy to give them a big thank you and ran away for it !!