Vivek Bachhawat
Advisor: Dr. Brian Ladd (Computer Science)
Client to Project:  Dr. Robin Lock (Mathematics)
SLU Festival of Science 2001 Oral Presentation

Computer Aided Instruction Tools in JAVA for Different On-Campus Departments

My project was to research and create a software package that can be used by different departments on campus for instructional purposes. I spent 8 weeks during summer of 2000 learning Java and designing this package, under the SLU Fellowship program. Using this package, students can visualize the theoretical ideas they work on in a class. Texts on any topic provide static information whereas computer based applets (web software) are interactive and hence helps constructive learning of the topic. With computer-generated programs, students can see how changes in a single data point affect the results of data analysis dynamically. This package can be customized and be used by any department on campus and as an example, I specialized the package for Mathematics department at St. Lawrence University. Any student who wishes to explore introductory statistics can use this package. I created the software to be used as a teaching-learning tool, which is not achieved by conventional software. Here students can use one part of the software to learn the concepts and then use the other part, as a game, to test the skills acquired. The following applets that I created using the package are targeted for statistics students but anyone interested in the subject can use it with ease.

(i)  Distribution Applet

(ii)  Distribution Game Applet and

(iii) Hypothesis Testing Applet

(i)  The Distribution Applet is a tool for learning Statistics Distributions. It generates different Statistics ‘Random number distributions’ viz Uniform, Discrete Uniform, Geometric, Normal, Binomial, Exponential and Poisson distribution based on student’s selection. The Applet has various inputs depending on the type of distribution chosen and the help files describe the procedure and gives description of the different types of distribution.
 

(ii)  The Distribution Game Applet is complementary to the Distribution applet. This applet is designed as a game that tests the knowledge of the student about Statistics distributions. Students are presented with a set of data, randomly generated by the computer, and are asked to make an educated guess of the distribution, based on the given data. The Distribution applet helps student learn various Statistics distribution concepts and the Distribution Game applet tests the skills acquired by the former applet. Thus both the applets work together as a teaching-learning tool.

 
(iii)  Hypothesis Testing Applet uses the hypothesis testing procedure of a given statistical theory and gives the null hypothesis “the benefit of a doubt”, that is to accept the null hypothesis unless there is strong evidence to support the alternative. The students can control the various variables of the given hypothesis and the applet updates the changes dynamically.

 
Also, this package is available online at http://it.stlawu.edu/~vbachh33/projects.html with complete source code and documentation for anybody interested in downloading and customizing the package for personal use.