If you have a garden of rocks, it is possible that no rock has the same weight as the average. ~Carl Jung

Our hands have many degrees of freedom, nodal and distributed.
I am doing research into how we can use our hands like an abacus.

Practice Series, 10 seconds to guess, refresh (ctrl-r or swipe) to go fast

Addition Practice

Arithmetic Progression Practice (1-9)

Arithmetic Progression Practice (11-99)

Multiplication Practice

Lessons

Rational Number Proof 1

Generalization of the Pigeonhole Principle

Theoretical Physics of Spring