Ngee Ann Polytechnic on Thursday kicked off its 10-day celebrations to commemorate its 50th anniversary as an institution.

Education Minister Heng Swee Keat, who was the guest of honour, unearthed a time capsule that was planted in the school grounds 25 years ago by the late Dr Tay Eng Soon, who was then Senior Minister of State for Education.

Mr Heng sealed a new time capsule containing 50 items, including a book that commemorates the polytechnic's journey that was also launched at the event. He also opened an exhibition that traces the school's history from its beginnings in 1963.

As part of the celebrations, the school has organised a slew of activities from now until May 4, including a two-night charity concert, a performance at the Singapore Botanic Gardens and an anniversary dinner.