It's a tricky concept, but these two lessons give students plenty of practice with the -car, -gar, and -zar verbs in the preterite.
The pack includes two full-class lessons, with a Keynote and PPT presentation for each and the activities to accompany.
Activity 1: Students respond to spoken questions "¿Cuándo fue la última vez que...? (all verbs are -car, -gar, and -zar)
Activity 2: Multi-practice handout, including a challenging and useful error-correction passage.