Teacher and founder of YouTube channel infinityplusone Subash Chandar K at his home in South Auckland, from where he broadcasts live maths tutorials for NCEA students around the country.

Mogamat Bardien has been recording his maths lessons and posting them on YouTube for learners around the country free of charge.

The brainchild of MIT graduate and a successful financial analyst Salman Khan, the academy was launched in 2006 when Khan decided to post mathematics tutorials for his cousin Nadia on YouTube.