They seem to have gradually gotten used to their classroom, teachers and friends.
They have been practicing walking in a line and holding a walking rope for several weeks.  Now they seem to be ready to let go of the rope and play in the play area. Following the rules, the Puppy teachers decided to let the Puppy friends have the very first day playing in the park.
Although they still needed reminders from their teachers at times, they did quite good and had a fun time there.