1. Meg's father has become thinner and his hair is wild and unkempt. He also looks younger and more confident.
2. Charles Wallace wants to take Meg's faults and weaknesses from her so she can become perfect like the other children on Camazotz. He believes that this will make her stronger and better able to resist IT's control.
3. Meg uses Mrs. Who's glasses to "tesser" to the planet where her father is being held captive by IT.
4. IT's appearance is described as a large brain that pulsates and glows. IT cannot be simply physically destroyed because it is a disembodied brain and does not have a physical body.
5. The phrase "like and equal are two entirely different things" means that just because two things are similar in some ways, it does not mean that they are the same or equal. This idea helps Meg because she realizes that she does not have to be like the other children on Camazotz in order to be strong and that her differences are what make her unique and special.