This activity is great timeline activity to check for understanding about events that are not chronological order along with practicing what era of time they belong in history. I used this as game with groups of students, and I have added those instructions of how we played the game. Then, I will use these cards for stations during STAAR Review. I have included the instructions of how I will do that during review. The cards could be used as warm-ups or assessments. There are 20 different cards in the activity, but you can add more or stay some away, depending on your need.