Current statistics and PGA leaders are listed in this site. The concept of positive and negative numbers could be introduced using the position of the players in the standings. The history of the game can be learned here. This one is all about kids in golf. This site gives the prices and information on some of the best known name brands in golf.
Students can compare and contrast the prices and pieces of equipment widely used in the game.
There are also places where you can find help for your game, if you already play. One might start with this site in a unit to lay the foundation for which to build the rest of the lessons on. Same rules almost. Compare and contrast the similarities and differences in the men's, women's, and junior's games. Kids can play this game, too.