NLX: building web pages with interactive calculations in minutes

An object technology and procedure are described for the rapid development of Web pages containing interactive calculations for learning or research applications. NumberLinX (NLX) consists of a library of Java objects for interacting with model equations, also coded in Java. Functions of the NLX objects include control of the calculations, changing model parameters, and displaying calculated results. NLX objects are general and do not require Java code changes for different models and applications. HTML parameters are used to connect interactive objects together, for example linking input objects to model parameters and output display objects to calculated variables. HTML templates for the NLX objects simplify the construction of interactive Web pages containing the objects.