An animated journey into the world of rational numbers! A fraction thief disrupts a number town, leading to a fun exploration of fractions, natural numbers, and mathematical concepts.

The advance touches on one of the most famous and intractable problems in mathematics: whether there exist infinities between the infinite size of the natural numbers and the larger infinite size ...

Aurora Gallardo, The Extension of the Natural-Number Domain to the Integers in the Transition from Arithmetic to Algebra, Educational Studies in Mathematics, Vol. 49, No. 2 (2002), pp. 171-192 ...