Helping Children Understand and use Numerals

av Ashock, Robert B, Engelhardt, Jon M, Wiebe, James H
Publicerad 1984

Helping children understand and use numerals

av Ashlock, Robert B, Engelhardt, Jonm, Wiebe, James H

The magic of numbers /

av Bell, Eric Temple
Publicerad 1946

Philosophy of arithmetic : psychological and logical investigations : with supplementary texts from 1887-1901 /

av Husserl, Edmund
Publicerad 2003