When Katniss and Peeta almost eat the poisonous berries, because they would rather die than kill one another.
The Reaping
Prim is chosen at The Reaping
Katniss volunteers for her.
Period: to
The Hunger Games
Train ride to the Capitol
During the train ride to the Capitol, the two tributes from District 12 get to know their mentor a little more. Haymitch Abernathy advises them to follow whatever their stylist says.
When they are on fire and shown to the audience for the first time.
When they are dropped into the arena, and the first few minutes of the games.
Katniss finds out that Peeta is working for the careers
Katniss and Rue forming an alliance
Katniss finds Rue dying
When the rule-change anouncement is made and Katniss finds Peeta.