Recess is a compound sign: first, sign time, then sign break, with the optional addition of play. To sign time, use your dominant hand's index finger to point to the top of your other hand's wrist, suggesting you are looking at the time on your wristwatch.
To sign break, form the ASL number 4 sign with both hands. Create a wedge with your non-dominant '4' hand as you lay it down on its pinkie side and open up an angle between your middle and ring fingers, then insert your dominant forehand's fingers into that wedge to signify a 'break'.
This is a useful flash card taught best in conjunction with other signs that will prepare your little one to maximize their recess break with their friends at preschool or daycare, while reminding them to be on their best behavior as well, whether on break or in class.