With the special apps spreadsheet and dynamic geometry software (DGS) are available.
The geometry App opens up new ways to discover "dynamically" geometric relationships. For this, the application provides all the features of popular dynamic geometry systems and allows you to draw points, segments, lines, polygons, and different curves (circle, ellipse, hyperbola, parabola, etc.). Also can easily midpoints, intersections, angle bisector, tangent, perpendicular, etc. be constructed. In addition, measurement and zoom functions are available.
Like any dynamic geometry software also provides the geometry App dynamic tensile mode, the comfortable through the use of multi-touch technology can be performed in all directions with a finger movement.
The Spreadsheet application provides the user with all the functions of common PC programs for spreadsheets available. This is especially useful during the understanding of numerical or iterative algorithms with which, for example, the Euler number e can be calculated π gradually the circle or number. Other application examples are Newton's approximation method or the Euclidean algorithm.
The accompanying spreadsheet shows the Heron algorithm for computing the square root of 5 with initial value 2