This is a great activity that use powerpoint to get students writing and practicing verb forms. The teacher begins each slide with a single click reveals three number combinations.
The first number is the subject and the second number is the verb. Students then have 30 seconds (the triangle disappears to show time passing) to write the three subjects with the correct form of the verb. An additional click shows the three subjects with the correct verb forms so that students can check their verb forms. Here is an example of a French writing activity.