ordinality

Ai was shown a random sequence of screens with two digits, just as when she was learning the ordinality of 1 to 9, although now sometimes one of the digits was a 0.

HERE’S LOOKING AT EUCLID Alex Bellos 2010

Then Matsuzawa wanted to see if she was able to infer an understanding of the ordinality of zero.

HERE’S LOOKING AT EUCLID Alex Bellos 2010

Ai was shown a random sequence of screens with two digits, just as when she was learning the ordinality of 1 to 9, although now sometimes one of the digits was a 0.

HERE’S LOOKING AT EUCLID Alex Bellos 2010

Then Matsuzawa wanted to see if she was able to infer an understanding of the ordinality of zero.

HERE’S LOOKING AT EUCLID Alex Bellos 2010

At school we are taught notions of cardinality and ordinality together and we slip effortlessly between them.

HERE’S LOOKING AT EUCLID Alex Bellos 2010

Then Matsuzawa wanted to see if she was able to infer an understanding of the ordinality of zero.

HERE’S LOOKING AT EUCLID Alex Bellos 2010

At school we are taught notions of cardinality and ordinality together and we slip effortlessly between them.

HERE’S LOOKING AT EUCLID Alex Bellos 2010

Ai was shown a random sequence of screens with two digits, just as when she was learning the ordinality of 1 to 9, although now sometimes one of the digits was a 0.

HERE’S LOOKING AT EUCLID Alex Bellos 2010

Mathematicians call this aspect of number “ordinality.”

HERE’S LOOKING AT EUCLID Alex Bellos 2010

Mathematicians call this aspect of number “ordinality.”

HERE’S LOOKING AT EUCLID Alex Bellos 2010