There are some funny actions in the card that are in red. These serve as extra "free spaces" or can be changed to something more meaningful. They are in red to help you keep track of how many free spaces are in each row (they will print out in black font like the rest of the font when using grayscale printing).
This is just one of many ideas found in this blog post:
How to Liven Up Your Next Socratic Seminar
Check it out for more ideas! Your feedback is greatly appreciated! :)
***Note***If you have any trouble printing this, be sure to File>Save as>PDF before printing.