Sue Ellen and the Brainasaurus is the second part of the third episode of Arthur season 3. It aired on October 5, 1998 with the episode Arthur Goes Crosswire.
Sue Ellen and the Brain are assigned to work on a project together. The others say it will be easy as Brain does almost all of the work by himself. Sue Ellen wants to help, but the Brain refuses to let her. This turns into a struggle that nearly ruins their project.