RedCrab is a mathematics software with fullscreen editor for technical, scientific and financial calculations.
The handling of the basic functions is just like a conventional calculator. There is no training required. The editor allows the free placement of algebraic formulas on the worksheet in mathematical notation.
Results can be displayed in different numeric formats or in diagrams. Images and text can be inserted to describe complex calculations.
The worksheets are also suitable for presentations as well.
RedCrab is shareware, also with limited functionalities can be used as freeware.