An input/output box. Click in the window and enter a number.		One of seven operation boxes
	Boxes can be linked by dragging an arrow from one to another		Introduce a variable. Right-click to add a label or to show a table.
	If a variable has been used in an input, then a graph can be displayed by linking the final output to the graph display.		Chose whether output boxes disdaply expressions or values

This shows what is possible if all key options are selected. The y-output box has been labelled (by right-clicking on it). It has also been set to display a table of values. Then a graph is displayed and connected as shown. If values are selected within the table, for example (2,14), then these coordinates are highlighted on the graph

This applet was developed by the Freudenthal Institute www.fi.uu.nl and available on the WisWeb website www.wisweb.nl. It is used with their permission.