Free Spanish Preterite and Imperfect Traffic Light to have your students keep track of key words/phrases for each of these tenses!
Green indicates GO - they write words/phrases that indicate ongoing actions for the imperfect.
Red indicates STOP - they write words/phrases that indicate an interruption for the preterite.
Yellow is for CAUTION - they write the verbs that can cause problems because they change meaning between the preterite and imperfect!
Includes a colored traffic light and a black and white traffic light, that your students can color themselves.