J. Winston Crawley, Professor Emeritus
Department of Mathematics
Shippensburg University of PA
email: jwcraw@ship.edu

Some background

I taught at Shippensburg University from 1976 until 2015. I began my tenure in the Department of Mathematics and Computer Science, where I assisted in the development of the Computer Science degree for the university. When the department split, I went back to my roots and stayed with the Department of Mathematics, serving as chair for several years.

Current work

Following my retirement, I have continued working on two major projects that were begun while still a professor at SU.
  • Discrete Mathematics. I am the coauthor, with SU professor Doug Ensley, of a text for the Discrete Math course. We developed extensive supplementary material for that course, with apps for exploration as well as for practicing the concepts. Those apps were developed using the Flash programming environment. Unfortunately, that environment has been discontinued, so I have been rewriting those apps, along with additional apps, using HTML5.
  • Statistics. This project consists of three major parts.
    1. I have developed extensive "textbook-like" notes which can be used along with a standard text or as a stand-alone resource. In particular, the material on inferential statistics is self-contained, and includes several apps based on simulation to help the students grasp the logic of hypothesis testing and confidence intervals.
    2. In conjunction with these notes, I have developed apps for practicing the concepts being taught.
    3. To make the materials more stand-alone, I have developed two statistics-oriented calculators for carrying out the various tests and confidence interval calculations.
      • An "ad-hoc" calculator allowing the student to enter small amounts of numeric data, and use that data for various descriptive and inferential statistical calculations. This calculator provides options for saving that data to a text file for future use.
      • A datafile calculator for analyzing data in a traditional data file form. After opening a student-supplied comma-delimited file such as would be created by spreadsheet data, this calculator provides a variety of descriptive and inferential operations to be performed using the data in that file.
      The calculators contain some help screens describing their use. More detailed instructions for using the calculators is contained within the lesson documents.
  • Use these links for more information and for access to the materials under development:
     Discrete Math: Will be supplied - future
     Statistics: Will be supplied - future