Here's what I think...

Lupita: Lupita seems to lack cultural capital when compared to some of her classmates because of her lack of experience with crayons, toys, etc. I think that Mrs. Potter is wrong by rarely calling on Lupita because she lacks academic skills that the other students have. Lupita will only learn if she sees her mistakes and hears the correct answer. I think Lupita would highly benefit from small group work. It would help her to share her ideas and also hear her classmates comments back to her ideas. I also think that some partner work, with which Lupita would be paired with someone with higher academic skills, would also help her. This way, Mrs. Potter can still tend to the class as a whole and Lupita would get some help from a fellow student, while the fellow student would also get an increased understanding from having to explain something. Also, adding some arts and crafts projects to their classwork will help forward Lupita's skills in these seemingly simple areas. I think that Lupita just needs some more exposure to some things that we all take for granted. Since Lupita is good at the puzzles, Mrs. Potter could formulate a few special assignments using puzzles for Lupita to help her understanding in other areas.

Jonathan: I think that Jonathan should be exposed to books or other reading materials that involve his interests--such as baseball or piano. This may encourage his reading and cause him to try a but harder at practicing his reading. He should also be put in a reading group so that he gets specific help based on reading level, and even some individual help during a free-read time or something. Mrs. Potter may even want to speak to his parents and have them practice reading at home more often. As far as asking for help, maybe he is embarrassed that a lot of times he is confused in class. Mrs. Potter should offer the directions for assignments in different ways--orally to the class, written on the board, and again maybe individually to help get him started right away rather then giving him time to sit and do nothing. 

Eddie: Eddie seems to be a very active boy. I would offer to him a lot of hands-on activities to get his work done. Also, since he is behind on his work and seems not to try, a system should be created with him to ensure that his work does get done-- i.e. a chart that shows his work that has been completed which indicates whether or not he can go to recess, or have free time, for example. Or a system of daily notes home to the parents of what homework is for the week to make sure that the parents are actively involve in Eddie's school work and are aware of what he needs to do. 

Eddie's squirminess is probably distracting to other students. It might help to give him one of those stress balls (like the one discussed in Marcus: Gifted and Challenging) instead of having him constantly tapping his pencil on his desk. It will also help to have the class as a whole moving around the classroom so that no one gets too antsy.