Second Night of Class and The Recall

Second night of class went much better than the first, I thought. Cricket and I have been practicing our stay and sit and when Lee asked us to all perform the excercise, at the beginning of class, we were not the last to finish. I bragged a little to Lee, during one of our 2 min breaks, "isn't she doing better"? He agreed. Then Cricket spoiled it by being the loudest barker during our discussion period. We were all standing in the middle of the areana and Lee was explaining our next exercise, "Recall", and Cricket was merrily barking away. I spoke with Lee about this...and he gave me an excercise to help her with what he called "Seperation". I'll describe it in a minute.
The recall exercise consisted of us starting in our assigned chair. We would have 5 treats in our hand. We had hold of the leash, perched on the end of our chair with our legs open so our dogs could get right up next to us. The minute our pups sat, we would pet them vigourously, smiling, and give them a treat and tell them "good girl..or boy". The minute they stood up....you shut down till they sat again. You waited about 5 secs between each treat but they had to sit before they got the treat. We did this 3 times with 3 dif types of 5 treats. Then, after that was done we had someone hold our dog, 10 ft away. We had, yet, another type of treat. We showed it to them then took off running to our chair. We would sit in the chair and say, forcefully, "Insert Dog's name, Come"! Then as they raced towards you you would say, "good girl/boy" but never the "come" word, again. Then you give them there 5 treats, repeating the exercise where they have to sit to get the treats. Make sense? We were all confused, at first, too. Cricket did awesome! I messed up more than she did, yelling "come" more than once or givng her a treat and not petting her.