Let me amend those,
teg:
Episode #1
Letters from No One
Harry Potter and his difficult relationship with the Dursley's, including the Boa Constrictor event. Hogwarts letters start arriving and the Dursley's flee to an isolated island but someone follows them. (Chapters 2-3)
Episode #2
The Boy Who Lived
Hagrid makes his arrival and explains who he is and that Harry is a Wizard. Flashbacks to Hagrid delivering Harry to Privet Drive. They reach the Leaky Cauldron. (Chapter 4 and second half of Chapter 1)
Episode #3
Diagon Alley
Hagrid shows Harry around Diagon Alley, introducing him to the Wizarding World. Harry's last few weeks with the Dursleys and being dropped off at Kings Cross, with no idea how to find the train. (Chapter 5 and first pages of Chapter 6)
Episode #4
9 ¾
Harry meets the Weasleys and rides on the Hogwarts Express, arriving at Hogsmeade and having his first view of Hogwarts (core of Chapter 6)
Episode #5
Out of Sorts
Crossing the lake to Hogwarts, Harry is Sorted and has his first few magic lessons, giving a showcase of what Wizards can do. (end of Chapter 6, Chapter 7 and first half of Chapter 8).
Episode #6
The Potions Master
Harry's first lesson with Snape, meets Hagrid again and learns of the break in. First flying lesson and a challenge from Draco. (second half of Chapter 8 and most of Chapter 9)
Episode #7
Hallowe'en
The expedition to meet Draco for the duel, finding the Cerberus. Halloween. Possibly a flashback to McGonagall's view of Harry's arrival at the Dursleys? Harry and Ron go looking for a missing Hermione and find the Troll. (end of Chapter 9, first half of Chapter 1?, first half of Chapter 10)
Episode #8
The Match
The three children fight the troll. Harry has his first Quidditch Match. (end of Chapter 10, Chapter 11)
Episode #9
Erised
Christmas at Hogwarts. Harry receives the Cloak of Invisibility and finds the Mirror of Erisid. Possibly a flashback to Dumbledore's view of Harry's arrival at Dursleys (alternate to Episode 7 or split)? Learn that Snape is referee for next Quidditch Match. (Chapter 12, first half of Chapter 1?, first half of Chapter 13)
Episode #10
Spiriting Norbert
The Quidditch Match. The three help Hagrid with Norbert the dragon (end of Chapter 13, most of Chapter 14).
Episode #11
Blood in the Moonlight
Harry and Hermione smuggle Norbert to the astronomy tower to be picked up but are caught out of bounds. Detention in the Forbidden Forest. (end of Chapter 14, Chapter 15)
Episode #12
Into the Trap
The three dare the protections around the Philosopher's Stone and Harry manages to reach the Mirror of Eresid. (Chapter 16)
Episode #13
The Servant of Lord Voldemort
Harry faces Quirrelmort and saves the Stone. End of the School Year with Harry off to stay with the Dursleys for the summer. (Chapter 17)