Grandma Thora Appreciation Day

"Grandma Thora Appreciation Day" is the first half of the 15th episode of season 2 of the animated children's series Arthur. It originally aired on March 9th, 1998.

Plot
Arthur and D.W. are planning a surprise party to show their appreciation for Grandma Thora. Grandma Thora unexpectedly shows up early when her car breaks down and they must finish their last minute preparations without her noticing.