Conjecture and Proof: Nurturing Creativity in the K-12 Classroom, Triangle Math Teachers Circle, North Carolina State University, February 10, 2018.
Problem-Solving the Math Circle Way, workshop for graduate students and faculty, Florida State University, December 14, 2016.
Frogs and Toads, workshop for elementary and middle school students from the Tallahassee Math Circle, Calvary Orthodox Presbyterian Church, December 13, 2016.
Mathematics and Its Teaching in the Muslim World, Panelist, Teachers College – Columbia University, October 10, 2016.
Do You Think Like a Mathematician?, Hispanic Educational Summit, North Carolina State University, March 11, 2016.
Mathematics and Its Teaching in the Southern Americas, book presentation, University of Puerto Rico, Río Piedras Campus, April 15, 2015.
Mathematics and Its Teaching in the Southern Americas, book presentation, University of Puerto Rico, Carolina Campus, November 7, 2014.
Mathematics and Its Teaching in the Southern Americas, book presentation, University of Puerto Rico, Mayagüez Campus, November 4, 2014.
The Decades Ahead, Columbus Day Symposium: Mathematics Education in Latin America, Teachers College – Columbia University, New York, October 13, 2014.
Math Circles Workshops, Primer Coloquio sobre Matemática Educativa y Aplicaciones “Maestro Remigio Valdés Gámez,” Universidad Autónoma de Coahuila, Saltillo, MEXICO, January 27-28, 2014.
Mathematics and Spirituality, Center for Interdisciplinary Mathematical Sciences, Benares Hindu University, Varanasi, INDIA, February 4, 2014.
Mathematical Puzzles: An Egalitarian Approach, City College, City University of New York, May 22, 2012.
Mathematical Puzzles: Liberating Remedial Instruction, John Jay College of Criminal Justice, City University of New York, March 13, 2012.
The History of Mathematics as a Didactic Tool, UPR at Mayagüez, October 18, 2003.
Special Secondary Schools: An International Panorama, UPR at Mayagüez, September 25, 2003.
Beautiful Minds Need Able Beholders – Preparing Middle School Teachers to Identify and Nurture Mathematical Talent, City College, City University of New York, February 12, 2002.