Availability:

Usually available anytime

Phone Number:

Please email me to schedule time to connect or use my appointment calendar for "Connect Time" in your online course.

Teacher Bio:

Hi All.

I am Dennis Kostac. I have been teaching Math and other subjects since 1974 from the middle school level through college. Although teaching has been my career, much of my success has come through sports officiating. I have umpired softball and baseball and have refereed thousands of basketball games. I am still very active with college and high school softball and some basketball.  

I have four wonderful grandchildren that keep me busy as well. My wife, Joan, and I spend our summers at our place on Pine Lake in northern Wisconsin. We love to bike, hike, kayak, and just relax. The highlight of the summer Is the visits by the grandkids. They keep us hopping. 

We will be celebrating our 50th wedding anniversary this November. We love to travel and have visited most of the places on our bucket list. Retirement is a great thing. Originally from Hurley, Wisconsin, we now live In Green Bay.   Big Packer, Badger, Bucks, and Brewers fan of course.

Subjects and Grade Levels taught:

College And Career Math Prep (9-12)

Wisconsin Teacher Licensure:

Math
Chemistry
General Science