This study guide clearly explains how to form the imparfait, taking "baby steps" with lots of practice. It starts by telling students a "shortcut" for SPEAKING ONLY that will save them the hassle of conjugating in their head while they are trying to get their point across during conversation. Next, it walks students through the three steps of forming imparfait: conjugate the verb for nous, drop the ons, and add the endings. For each step, there are 10 practice verbs. After the explanation, there are three practice exercises. The first 12 sentence practice has students simply conjugating verbs. The second exercise asks them to make the first 12 sentences NEGATIVE. Finally, students are asked to translate phrases that would logically be in the imparfait.
The format of this 7 page document appeals to visual learners and it organizes information in a logical way.