3R Teacher Training was founded in 2013 by classroom teachers with a common passion – helping teachers to meet their challenges and make their classroom lives more rewarding. We have long realized that teachers learn best from other teachers who share their perspectives and understand how valuable their time is and what they need to get from their in-service training. We ignore the pedagogical fads that seem to come in cycles and educational jargon that serves no purpose. We teach nothing that we wouldn’t use in our own classrooms and we take great pride in what we do. Most of all we love working with our favorite people – teachers!

The Owners and Trainers

Dr. William Tozzo

Bill has been in education for over 20 years. He has served as a high school mathematics teacher, a mathematics coach, mathematics department chair, and consultant. He has spoken at dozens of events as both a presenter and keynote speaker. Bill loves training teachers and his favorite topics are assessment, technology, K12 mathematics instruction and general instructional strategies. Bill received a bachelor’s degree in General Science and Psychology from Fordham University in New York, a master’s degree in Curriculum and Instruction from Florida Atlantic University in Florida, and a doctorate in Mathematics Education from Columbia University’s Teacher’s College in New York. He lives in Connecticut with his wife Amy and their two boys Luke and Leo.

Dr. Amy Butterfield-Tozzo

Dr. Amy possesses an extensive background in education, spanning over 25 years, with diverse roles both in K-12 and higher education settings. Her professional journey includes positions such as an elementary school teacher, a middle school special education teacher, and a reading specialist. In addition to classroom roles, she has also served as a district-level learning specialist for students with learning disabilities and as a professor in a graduate school's special education department.

Amy's passion for education extends to her involvement in graduate-level teaching, where she has inspired and mentored educators for several years. She is a co-author of the esteemed publication, “think! Mathematics (1st edition).”

Amy holds a bachelor's degree in Elementary Education N-6 from Marymount College in New York and a dual master's degree in Special Education N-12, along with Reading Specialist certification N-12, from Manhattanville College in New York. She furthered her academic pursuits by earning a doctorate in Educational Leadership from NSU and recently achieved a certificate in Special Education to Adulthood from the University of Connecticut.

Outside her professional life, Amy resides in Connecticut with her husband, Bill, and their two sons, Luke and Leo. They share their home with their Australian Cattle dogs, Lucy Blu and Mikey. This combination of professional expertise and personal commitment reflects Amy's holistic approach to education and her dedication to creating inclusive and effective learning environments.

Dr. Yeap Ban Har

The media has called Dr. Yeap Ban Har “Singapore Math’s Michael Jordan” and “Royalty when it comes to Singapore Math.” He is considered to be one of the most accomplished trainers and speakers in the world on the subjects of K5 Mathematics and Singapore Mathematics. Dr. Yeap Ban Har has taught at National Institute of Education, Nanyang Technological University in Singapore for more than ten years. Ban Har is best known as a proponent of the Singapore Math method, an instructional approach that is recognized globally for its effectiveness.