Phoebe claims that her and Stinky's science project was an honor to her hero, I.P. Pavlov, who is a famous Russian psychologist, known primarily for his work in classical conditioning. Pavlov did the same experiment as Phoebe, but with a dog.
When Arnold tries to encourage Helga to be positive about their science experiment, he mentions "Walden", a text written by renowned transcendentalist Henry David Thoreau.
After finishing her comic book, Helga reminisces that "Jughead cannot seem to realize that Veronica has no interest in him at all", most likely a reference to Archie, in which two of the main characters are named Jughead and Veronica.
Although within the pages of Archie, one of Jughead's primary character traits is that he is repulsed by romance (often ironically attracting girls).
Airing[]
On international broadcasts, this episode is paired with "Partners", but in the US, it was first aired along with "Part Time Friends".
Continuity[]
This episode more or less has a sequel in "Egg Story": Helga and Arnold are partners for a science project.