Simplify the following text for a Grade 6 native English-speaking person.
Original: It is the 9th biggest island of the world , and at 217291 k is Canada 's second largest island and nearly double the size of Newfoundland ( or only slightly bigger than the size of the island of Great Britain ) .
Simplified: It is the eighth largest island in the world , and at 217291 k is Canada 's second largest island .