Papers
  1. Conception of Constructive Activity: Doing, Communicating, Visualizing, Thinking. Paper Presented at the International Conference, November 1999, Universiti Kebangsaan, Malaysia.


  2. The Power of Non-Technology Visualization. Paper Presented at the International T-Cubed Summer Institute, 26-30 July 1999, The Ohio State University, Columbus, OH.


  3. Flexible Modular Technology of Teaching/Learning Business-Mathematics: Paper Presented at the International Conference on New Instructional Technologies in Business Education. – Kazan: Kazan State University (Russia), Sept. 9-12, 1997.


  4. Visual Proof Techniques: Paper Presented at the Conference of Mathematical Association of America.- Columbus (Ohio, USA), Apr. 21-22, 1995.


  5. PREMOD-System: Paper Presented at the 38th Annual Congress of the Association of Mathematical Instruction. - Sendaj (Japan), Aug. 6-8, 1990.


  6. The Integration of Problem-Based and Modular Instruction in Professional Education: Paper Presented at the International Conference on College Teaching/Learning.- Jacksonville (USA), May 9-12, 1990.


  7. Problem-Modular Designing of Mathematics Curriculum in Secondary School. Paper Presented at the First Soviet-American Symposium on Educational Technologies. – Anapa (Russia), Sept. 23-30, 1990.


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