It is good to help others learn.
Kara is doing her homework at the park after school, and she see's a girl, Molly, she knows from school looking confused at her notebook.
Kara wants to see what Molly is so flustered about.
Kara asks Molly what the problem is, so Molly shows her a difficult math problem, and Kara shows her how to do it properly.
Kara asks Molly what the problem is, so Molly shows her a difficult math problem, but Kara says she doesn't really have time to help.
Molly feels relieved and is appreciative that Kara took the time to help her out.
Molly gets so frustrated that she gives up on the problem and learns nothing.