The wide shot shows Sam and her sister Tiana on her bed having another argument. The wide shot allows the viewer to see the state of how messy yet simplistic Tiana's room is especially since they're poor . It's the first time we see Tiana and hear her talk so we can tell she has a big personlitity, so using the wide shot of her room and occasional close up of her hand gestures we get an automatic insight to her character.
A close up shot is used to show Sam's facial expressions after talking with her sister. She has an excited and thankful yet suprised look on her face because it's the first time her sisters given her advice that actually means something. The close up on her face shows us her reaction which is really important.
The use of the close up shot of Sam's shoes is very much like repeating the beginning of the film again. It's repeating Sams fear as she walks into class where she knows she will be judged but this time she has a different frame of mind. The close up of her walking is used in relation to the beginning but this time round she doesn't look so sluggish. You can tell she's still nervous though.
The camera then cuts to a wide shot of the whole class where everyone is rambunxious and loud. No one notices Sam's entered excpet for Sam. The wide shot shows us that Paige is still invested in Sam in some type of way even when she has good reasoning to not even take notice to her with the class being so noisy.
An extreme close up is used to focus on Paige's eyes while she's staring a Sam because she's realised her actions have really impacted Sam. An extreme close up is used because it makes sure there's nothing else distracting in the background. And the audio gets slightly quieter the longer she stares. It's as if everything else gets blurry and fades out.