When Supersaurus claims to be the longest animal, Blue Whale begs to differ. The two animals debate who is longer until Inchworm (who happens to be exactly one inch long) enters the scene and offers to measure them both. The animals agree and decide the loser will treat the winner to lunch. Inchworm inches along the entire length of Blue Whale, who measures 1300 inches long. But the measuring took so long that Inchworm has no time to measure Supersaurus. Luckily, Centipede (who happens to be exactly one centimeter long) offers to measure all 3302 centimetres of Supersaurus. Great! Except centimetres are different units of measure from inches. Will the two ever figure out who won? Award-winning author and illustrator Carolyn Fisher delivers a new and incredibly original way to introduce measurement to kids. The book has cross-curriculum applications in mathematics, life science and social-emotional learning, and is the perfect choice for educators looking to combine maths and social-emotional learning in the classroom. The content covers both metric and customary systems and has been reviewed by a math curriculum expert. Back matter includes more information about the animals in the book and about other units of measure.