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 legend goes—probably false, but hey, it makes a point—that the discovery of the irrationality of√2 was so disconcerting to the Pythagoreans, who wanted all numbers to be rational ...

Even such bonkers-looking numbers, however, together with all the rational numbers, make up only a tiny fraction of the real numbers, or numbers that can appear along a number line. (As a reminder ...

When my students grow too dependent on their calculators, I ask them to find a number that, when multiplied by itself, gives them 2. Students quickly see that since 1² = 1 and 2² = 4, the answer has ...

Irrational numbers vastly outnumber rational ones: If you pick a point along the number line at random, it’s almost guaranteed to be irrational. Even though the numbers that feature in mathematics ...

Irrational numbers are numbers that cannot be expressed as the ratio of two whole numbers. This is opposed to rational numbers, like 2, 7, one-fifth and -13/9, which can be, and are, expressed as ...

The whole world, they believed, could be described using rational numbers, including natural numbers and fractions. Yet when Hippasus examined the length ratios of a pentagram—the symbol of the ...

Yes, really really. It is completely, unequivocally and blatantly not a rational number. The interesting question for me, and one I've accepted I'll never know the answer to, is why on earth do so ...