Any One Know About Uncle Dan from Argentina?

From His website:
About Uncle Dan


Uncle Dan has been teaching since 1978. He has taught at:
The Cambridge Montessori School of Cambridge, Massachusetts
The One-Room Schoolhouse of Great Cranberry Isle, Maine
The Centro Rural de Estudios of Buenos Aires, Argentina
The Brickhouse Academy of Sarasota, Florida
This video series is the culmination of his 22 years of teaching experience.
Daniel Suttin is a graduate of the Bronx High School of Science in New York City. He attended Renssalaer Polytechnic Institute in Troy, New York and then received his B.A. from the City College of New York. He continued at Boston State College completing courses which granted him certification in the state of Massachusetts as both an Elementary School teacher and as a teacher of High School Mathematics.

• Uncle Dan's Algebra