like every...
They (Sam, Artie, Puck and Mike) sing the song in the episode 'Comeback', which is the thirteenth episode of season 2.
Artie sings it in the season one episode 'Wheels'
Artie gets knocked out of his chair in Season two's episode, "Furt".
No, Brittany and Artie break up in "Rumors", which is the nineteenth episode of Glee's second season.
Every single episode. That is somewhat of a stupid question. He is in the glee club. He must sing. lolz. :)
The Glee Episode In Which Finn Happens To Sing Jesse's Girl To Rachel Is Laryngitis
Episode 4
They sang it on the episode called On My Way
He walks in the Christmas episode. He gets them from 'Santa Claus'. It's the episode where Brittany still believes in Santa.
In the episode "Prom Queen" [Season 2, episode 20] Puck accompanies Artie on guitar while Artie sings an apology to Brittnay ("Isn't She Lovely"), later in the episode, Puck and Artie sing at Junior Prom ("Friday").
Special Education
no