Zero (episode)

Zero is the fifth episode of Numberblocks. It's learning objective is to introduce Zero.

Story
One, Two and Three are having three block cakes. Three eats the yellow cake, Two eats the orange cake, and One eats the red cake. After the cakes are gone, she wonders what one less than one is. She only has one way to find out. She finds a rope and goes in the tin and asks Two and Three how many blocks are in the tin. Two and Three pull her. Zero appears! Two and Three are surprised that they've never seen a transparent Numberblock, because Zero is a ghost, of course! Zero sings about things that come in zeroes, or nothing at all.

Trivia

 * Song: My Hero, Zero!
 * This song is based off the Schoolhouse Rock song of the same name.
 * This episode marks Zero's debut in the show.
 * This is the last episode where Three is the biggest number.
 * Unlike real life, 0 was the fourth digit discovered.