When i was Fred chair I did many things to make it interesting. One thing I did was when i was teaching the different parts of the creed i asked the new members to write down what they thought it meant so they put it in their own words and then it made them learn the true meaning of what each part of the creed is all about. So they were able to understand it better and then it was easier to remember.
When i taught some of the history like the story of the strawberries i found a way to reenact that story by having a sister come to the door with a basket full of strawberries and then i told the story. ( which was fun because it brought the story to life) I also did that with other stories such as the first meetings and a few others.
I created games... During easter time i made an egg hunt with plastic eggs that had a question in each egg. I told the new members to go on a hunt and try to find the most eggs as possible. After they found all the eggs they had to open it up and answer the question. If they did not get it right then the next girl got to answer. whoever got the most answers right in the end got a basket full of candy and little prizes.
Also during the fred meetings i would keep a board of how everyone is doing and if they all did well on the quiz that week then i would bring in candy or something little that had ZTA on it.
Also if you have enough girls (which i was not able to do when i was fred) ask the girls to pick a founder that is most like them or that they liked the most and then tell them to look at the mystifying picture and dress up in their own style that best represents that founder and then they would pose and they will get their picture taken. Then after that you can tell the girls a little bit about each founder and what they did for the fraternity and also the story behind the mystifying picture.
What i tried to do was make Fred a fun experience. If you show that you are excited about teaching Fred then they will be excited about learning it which in the end will make them respect and love everything about ZTA.
Hope that helped you. if you have any questions or want to know any more of my ideas I would love to help out