Hey Arnold! Season 3 Episode 33
Biosquare
As a science assignment, Arnold and Helga have to work together, and get along with each other, for 24 hours in the Sunset Arms greenhouse.
3 - 38School PlayMar. 08, 1999- 3 - 37School DanceJan. 04, 1999
- 3 - 36Girl TroubleJan. 04, 1999
- 3 - 35Rich KidJan. 04, 1999
- 3 - 34Crabby AuthorDec. 28, 1998
- 3 - 33BiosquareDec. 07, 1998
- 3 - 32Part-Time FriendsDec. 07, 1998
- 3 - 31The Pig WarDec. 07, 1998
- 3 - 30Phoebe Takes the FallDec. 07, 1998
- 3 - 29The FloodNov. 25, 1998
- 3 - 28Helga's Show / The FloodNov. 25, 1998
- 3 - 27Arnold's ThanksgivingNov. 18, 1998
- 3 - 26Grand PrixNov. 04, 1998
- 3 - 25Arnold & LilaNov. 04, 1998
- 3 - 24Cool PartyNov. 02, 1998
- 3 - 23Best ManNov. 02, 1998
- 3 - 22Hey Harold!Oct. 21, 1998
- 3 - 21Career DayOct. 21, 1998
- 3 - 20Helga and the NannyOct. 19, 1998
- 3 - 19Arnold Betrays IggyOct. 19, 1998
- 3 - 18Oskar Gets a JobOct. 14, 1998
- 3 - 17The Aptitude TestOct. 14, 1998
- 3 - 16Roller CoasterOct. 07, 1998
- 3 - 15Sid's RevengeOct. 07, 1998
- 3 - 14Road TripSep. 30, 1998
- 3 - 13Grandpa's BirthdaySep. 30, 1998
- 3 - 12Preteen ScreamSep. 23, 1998
- 3 - 11Curly SnapsSep. 23, 1998
- 3 - 10Olga Gets EngagedSep. 16, 1998
- 3 - 9Stinky Goes HollywoodSep. 16, 1998
- 3 - 8Helga vs. Big PattySep. 09, 1998
- 3 - 7Arnold's RoomSep. 09, 1998
- 3 - 6Gerald's TonsilsSep. 07, 1998
- 3 - 5Casa ParadisoSep. 07, 1998
- 3 - 4Mr. Hyunh Goes CountrySep. 02, 1998
- 3 - 3Dangerous LumberSep. 02, 1998
- 3 - 2Harold the ButcherAug. 31, 1998
- 3 - 1Helga Blabs It AllAug. 31, 1998
