Numbercus

Numbercus was originally envisioned as a tool to assist some people on the autistic spectrum in learning fundamental aspect of numbers.
Numbercus aims to help with learning the following
- alternate representation of numbers helpful in some forms of mental arithmetic.
- common western representation of numbers
- representation of zero
- positive integer numbers from one to a billion minus one
- visual representation of scale between units, tens and hundreds
- negation of leading edge zeros
- pattern in placement of commas