There are a lot of resources on the web that will introduce students to Greek Theater. This resource is easy, simple and to the point. I just finished teaching a unit over Antigone last week and I used this single activity to build background knowledge for students.
There's a video to introduce Sophocles. And a reading activity with informational text on the Oedipus myth as well as a plot overview of Oedipus the King. The reading activity includes embedded activities for students to practice active reading through annotations and answering text dependent questions.
The slide show includes an exit ticket, which could easily be used for an entrance ticket for day two of the unit.
If you have any questions about this product or would like more resources for Antigone, please contact me.
Happy Teaching, Happy Learning!