Final answer:
Without context or a specific reference, it's impossible to answer what Calvin read to Charles Wallace at bedtime; however, it may be a scene from 'A Wrinkle in Time' by Madeleine L'Engle.
Step-by-step explanation:
The student's question "What did Calvin read Charles Wallace at bedtime?" refers to a scene from a work of fiction, and the subject in question, 'Calvin', is likely a character from a story who is reading to another character named Charles Wallace.
The references provided do not contain a specific answer to the question. Therefore, without the context of the book or story in which this scene takes place, it is impossible to provide a factual answer. This question may likely be in relation to 'A Wrinkle in Time' by Madeleine L'Engle, in which characters named Calvin and Charles Wallace appear. However, the actual excerpt or scene in question is not provided in the given references. To find an answer, one would need to refer directly to 'A Wrinkle in Time' or the specific text from which this question is drawn.