This useful, simplified map of Oceania pinpoints Fiji's position in red.
Fiji on a Map of Oceania
Here's a simpler fact worksheet for the children to fill in, when they are studying Fiji. It includes some location work.
We ask the kids to find out some facts about Fiji to fill in this worksheet, as well as to mark its location on the map. Why not do all countries in Oceania and build up the complete set?