Snape's strict teaching style makes Harry more resilient. Harry has to endure Snape's sarcasm and difficult tasks, which in turn helps him grow as a wizard. He learns to face challenges and not be intimidated by authority figures in the magical world.
Snape could teach Harry about the importance of potions. Potions are a crucial part of magic in the wizarding world, and Snape is an expert in this area. He could pass on his in - depth knowledge of potion - making techniques and the properties of different ingredients.
Snape made a crucial contribution by being a double agent. He played a very dangerous role, pretending to be on Voldemort's side while actually working for Dumbledore. His information was vital in protecting Harry Potter and in the overall fight against the Dark Lord.
One important lesson Snape teaches Harry is about the value of self - control. In various situations, Harry has to learn to hold his temper, and Snape's interactions, although often tense, contribute to this learning.
Snape often disciplined Harry in class, which was part of his strict teaching style. He also saved Harry's life on some occasions, like when he countered Quirrell's curse during the first year's events with the Philosopher's Stone.
One interesting plot could be that Snape, while teaching Harry, discovers a hidden talent in him for a very rare branch of magic. He then decides to secretly mentor Harry in that area, leading to a unique bond between them.
One common theme is rivalry. Snape's dislike for James Potter often spills over onto Harry, creating a tense rivalry in the classroom. Another is mentorship, where Snape, despite his gruff exterior, might end up teaching Harry something valuable during class.
One interesting plotline could be Snape finally seeing Harry's potential in potions and secretly mentoring him outside of class. This could lead to a grudging respect between them.
The theme of good vs. evil is also very prominent. The forces of good, represented by the Order of the Phoenix, battle against the evil Death Eaters led by Voldemort. And there is also the theme of self - discovery. Harry learns about his own past and his destiny as he grows up at Hogwarts.
Harry learned about sacrifice. Dumbledore sacrificed a lot in his fight against Voldemort and taught Harry that sometimes sacrifices are necessary for the greater good.
Dumbledore can also be a significant character. He might be the one who arranges for Snape to teach Harry, having some grand plan in mind. He could be observing from the sidelines, guiding Snape's actions and Harry's progress subtly.