Touch Calculator

You see a brand new style of calculators. It is designed for finger tips. Just touch the background to start new equations and touch an equation to edit in the way you need.
It works like a desktop calculator. It features with:
Unary operators: percent and Square root
Binary operators: addition, subtraction division and multiplication
New features will be added.
You could group and order the equations with finger tip. You could easily use the numbers from other equations(PICK). Just Try yourself.
It is a gift for school kids. You could used as draft paper and school help. When you start to use, you will addict to it.