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Darrel

College Professor in Engineering and Math for over 30 years.

I have a Masters Degree from Michigan Technological University and have been a Professional Engineer for over 25 years. I was a Vice President of a Advanced Product Development department with over 50 engineering personal and have 5 patents. I've been a University Professor for over 30 years and developed curriculum for Colleges and Universities. I'm listed in Who's Who Among American University Professors and Who's Who Among American Teachers. My sense of accomplishment is driven by stud...

algebra 1


algebra 2


prealgebra


trigonometry