(1) The teaching building is represented by several pairs (2,5), and the locations of supermarkets, gymnasiums and music fountains are represented by several pairs on the map as follows:

(2) Mark the location of the buildings below on the map.

Yifu Building (4, 1) Library (4, 7) Biological Park (9, 6)

(3) According to the method of number pairs indicating position, Xiaoxiang's activity route is as follows:

(2,5)→(4,7)→(4,3)→(7, 1),

This shows that he went to the teaching building, library, gym and music fountain successively.