This project would not have been possible without the enormous contributions of many brilliant, hard working people.  It has been nearly a decade since I last worked with Dr. Yoram Sagher, but his wisdom and lessons visit me daily.  I can’t thank him enough for inventing the most powerful classroom tool I’ve ever worked with.

Robin Ramos encouraged me to write my first collection of Sprints and without her angelic encouragement and mentorship on that project and beyond, creating this improved collection would not have occurred to me.

The Revisionary Edition would’ve been released several years later had it not been for Pat Mohr’s extensive editing, formatting, and suggestions.  Without Diana Kolhoff’s consultation, books eight and nine never would have been written.  Diana retaught me many middle school concepts and more than once convinced me to keep working when I was ready to give up.  She can be contacted at .

A special thanks also goes to Oneida-Herkimer-Madison BOCES’ Nancy Sommer.  She always picked up my phone calls on the first ring and provided excellent consultation for books one through seven.  Rachelle Bertumen – a spectacular fifth grade teacher in Oakland, CA – piloted dozens of Sprints in her classroom and gave me great suggestions on how to improve many of them.  She also introduced me to her sister, Emily Bertumen, who assisted me with data entry and formatting.

Former students Natalie Truong, Amy Tran, and Selena Tran helped me check for incorrect answers and admitted that they had fun doing it.  My nephew, Kai Laszakovits, helped me edit the Times Tables answer key book and I hope this improved his automaticity.  

Lastly, I thank the students of FACT Charter School in Philadelphia.  Their inspiration has and continues to attract great teachers, including Linda Wai, who helped with this project.  They were patient with me when I was a struggling teacher and their enthusiasm helped develop Sprints into a sensation.  It has been a long time since I’ve taught at FACTS, but my heart has never left.


Bill Davidson

August, 2017