Institution | Degree | Graduation Date |
---|---|---|

University of North Texas | Doctor of Philosophy | |

Emporia State University | Bachelor of Science in Education | |

Stephen F. Austin State University | Master of Science |

Employer | Position | Start Date | End Date |
---|---|---|---|

Midwestern State University | Professor of Mathematics | 09/01/2020 | |

Midwestern State University | Professor of Mathematics/Chair | 08/01/2010 | 08/01/2020 |

Midwestern State University | Associate Professor of Mathematics | 08/01/2004 | 08/01/2010 |

Midwestern State University | Assistant Professor of Mathematics | 08/01/1999 | 08/01/2004 |

Mount Union College | Assistant Professor of Mathematics | 08/01/1998 | 05/01/1999 |

University of North Texas | Graduate Teaching Fellow | 08/01/1993 | 07/01/1998 |

Stephen F. Austin State University | Graduate Teaching Assistant | 08/01/1991 | 08/01/1993 |

Blue Valley High School, Blue Valley USD #229 | High School Mathematics Teacher | 08/01/1988 | 05/01/1991 |

Blue Valley Middle School, Blue Valley USD #229 | Middle School Mathematics Teacher | 01/01/1987 | 08/01/1988 |

D. Slavens & M. Harrell. (2009) “Graphing Piecewise-defined Functions by the Use of Domain Regions” *Kansas Science Teacher: Journal of Mathematics and Science Teaching* (to appear).

D. Slavens & M. Harrell. (2009) “Is a Rational Function’s End Behaviors related to the End Behavior of the Quotient of Its Associated Polynomials?” *ON-Math, Online Journal of School Mathematics* Volume 7, Issue 1 (6 pages plus related electronic student activity).

M. Harrell & D. Slavens. (2009) “Using Base-ten Block Diagrams to Discover Divisibility Tests” *Teaching Children Mathematics*, Vol. 15 Issue 6, pp. 370-378.

D. Slavens & M. Harrell. (2006)“Investigating Horizontal Asymptotes and the Graphs of Rational Functions”*Ohio Journal** of School Mathematics*, #54 (Autumn), pp. 38-45.

E. Bator, P. Lewis, & D. Slavens. (2006) “Vector Measures, c_{0}, and (sb) Operators” *Bulletin of the Polish Academy of **Sciences*, Vol. 54 No. 1, pp. 63 – 73.

M. Harrell & D. Slavens. (2004) “Investigating Vertical Asymptotes and the Graphs of Rational Functions”, *Ohio **Journal of School Mathematics*, #50 (Autumn), pp. 64 – 70.

D. Slavens. (2004) “Exploring the Pythagorean Theorem with The Geometer’s Sketchpad” *Kansas Science Teacher: Journal of Mathematics and Science Teaching*, Vol. 15, (Spring), pp. 31-38.

E. Bator & D. Slavens. (2003) “DP-1 and Completely Continuous Operators” *International Journal of Mathematics and **Mathematical Sciences*, Volume 2003 No. 37, pp. 2375 – 2378.

E. Bator & D. Slavens. (2001) “Applications of a Decomposition in X tensor Y” *Annali di Matematica Pura ed* *Applicata *(IV), Vol. CLXXIX, pp. 189 – 196.