A Fan To Change One's Mind is an episode from the 1979 series.
Plot[]
Concerned that Nobita isn't studying for the final exams, Mom tries to tell him about its seriousness, but Nobita keeps procrastinating. Hence, she forces him to study. However, things take a turn for the worse when Nobita refuses, forcing Mom and Dad to agree to be stricter to him. When Mom and Dad goes up to check on Nobita, Doraemon uses a Fan To Change One's Mind and makes Nobita study.
Soon Nobita decides he is done with studying and goes out to play, and uses the fan to make Doraemon willing to lend the gadget to him. Using the fan again, Nobita invites Suneo (who brings up the story of the Ant and the Grasshopper), Shizuka and Gian out to play hide-and-seek, but after he uses the fan to cool himself down decides to leave the game and keep the rest hiding.
Nobita goes back home to use the restroom, but changes his mind after cooling himself down again and walks away. Doraemon, Mom and Dad are puzzled to find Nobita trying to resist going to the restroom while they are having watermelon. They use the fan to cool themselves down and change their minds back again. They prevent Nobita from using the restroom while Gian, Shizuka and Suneo go over to Nobita's house and complain as well.
