Fish Trek is a well-designed, interactive computer game designed specifically to help teach English article usage. It offers six game levels, ten levels of difficulty, complete print options, tracking of wrong answers, and a comprehensive practice session. Learners always have a chance to redo or recycle material that they missed or didn't understand. Feedback is tailored to the question and not the generic "right" or "wrong." A plus for teachers is the test generator feature.

Version 2.0 of Fish Trek, which can be used with the newest operating systems (Mac and Windows), includes a new practice area with its own testing component and features an on-the-fly mistakes viewer.

While Fish Trek software supports The Article Book (0-472-08639-1), the book and the software can be used separately.