Sashka - calculator for kids

Sashka is a calculator for small kids, to explain them what 1-2 digit numbers are.

It combines numeric and graphic representation of the number.
It's useful for small children to learn how to add and subtract numbers, and what does it mean.
The graphic representation of the result contains both operands together with result itself, see screenshots.
If you print "12+13=" and keep the key "=", you can see graphical result first before the digital result, it allows you the check yourself.
For multiplication this app can explain, what multiplication is.
The key "M" can be used to toggle Portrait/Landscape orientation, but unfortunately it doesn't work with all Android devices.

I developed it for my granddaughter Sasha, to help her, and I hope it can help other children too.

Mikhail Kronrod, MkrScope(TM), April 18, 2013