Simplify the following text for a Grade 9 native English-speaking person.
Original: Carol Jean Vorderman MBE ( born 24 December 1960 ) is a British media personality , best known for co-hosting the popular game show Countdown for 26 years from 1982 to 2008 .
Simplified: Carol Jean Vorderman ( born 24 December 1960 ) is an British television presenter .