The Hidden Function model evaluates a function f(x) with parameters. It is designed to teach function concepts by allowing a teacher to define a function, hide that function in a repackaged jar file, and asking students to find the hidden function. Students vary the independent variable and observe the resulting function value. If the unknown function includes arbitrary parameters (e.g., f(x)=a*x-3) the parameters appear as additional input fields.

The Hidden Function model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run Java archive. Double clicking the ejs_math_HiddenFunction.jar file will run the program if Java is installed. EJS is a part of the Open Source Physics Project and is available in the OSP Collection.

Please note that this resource requires
at least version 1.6 of
Java (JRE).

Hidden Function for Teachers Model: Additional Documentation Regarding Customization
A pdf file that provides additional documentation regarding customization of this simulation. download 173kb .pdf
Published: July 12, 2012
previous versions

Hidden Function Source Code
The source code zip archive contains an XML representation of the Hidden Function Model. Unzip this archive in your EJS workspace to compile and run this… more... download 43kb .zip
Last Modified: June 6, 2014
previous versions

W. Christian, Computer Program HIDDEN FUNCTION MODEL (2012), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12185&DocID=3020).

Christian, W. (2012). Hidden Function Model [Computer software]. Retrieved February 6, 2016, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12185&DocID=3020

Christian, Wolfgang. "Hidden Function Model." http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12185&DocID=3020 (accessed 6 February 2016).

%A Wolfgang Christian %T Hidden Function Model %D June 8, 2012 %U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12185&DocID=3020 %O application/java

%0 Computer Program %A Christian, Wolfgang %D June 8, 2012 %T Hidden Function Model %8 June 8, 2012 %U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12185&DocID=3020

Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.