This text is dedicated to every high school mathematics teacher whose high standards and sense of
professional ethics have resulted in personal attacks upon their character and/or professional integrity.
Find comfort in the exchange between Richard Rich and Sir Thomas More in the play A Man For All
Seasons by Robert Bolt.
Rich: “And if I was (a good teacher) , who would know it?”
More: “You, your pupils, your friends, God. Not a bad public, that …”
I would like to acknowledge grateful appreciation to Mr. (Dr.?) Greg VanMullem, who authored the
awesome freeware graphing package at mathgv.com that allowed me to communicate my ideas through
many graphical images. A picture is truly worth 1,000 words.
Also a big “Thank you” to Dr. Art Miller of Mount Allison University of N.B. Canada for explaining
the “non-integer factoring technique” used by Henry Briggs to approximate common logarithms to any
desired place of accuracy. I always wondered about how he did that! Four colleagues, Deborah Dillon,
Hae Sun Lee, and Fred Hurst, and Tom Hall all graciously consulted with me on key points that I was
unsure of. “Thank you” Paul A. Zoch, author of Doomed to Fail, for finally helping me to understand the
parallel universe that we public high school teachers are forced to work in. “Thank you” Shelley Cates of
thetruthnetwork.com for helping me access the www. And the biggest “Thank you” goes to John Morris
of Editide (email@example.com) for helping me to clean up my manuscript and change all my 200 dpi figures
to 600 dpi. All errors, however, are my own.
Copyright © 2006 by Dan Umbarger (Dec 2006)
Revised, June 2010
Single copies for individuals may be freely downloaded, saved, and printed for non-profit educational purposes only.
Donations welcome!!! Suggested donation $6 students ages 1-18, $12 adults 19 and above. See mathlogarithms.com.
Single and multiple bound copies may be purchased from the author at mathlogarithms.com
or Dan Umbarger
7860 La Cosa Dr.
Dallas, TX 75248-4438