create a list of points using spreadsheet view; use the points to fit a sine curve - the command is fitsin[<points>]
walk through the process of finding extreme values for functions using Geogebra
Use Geogebra to construct an angle in standard position. The size of the angle can be adjusted as desired.
This section illustrates a simple procedure for constructing a circular arc of desired angular measure.
This tutorial shows how to instruct Geogebra to give you the intersection point of two lines.