GeoGebra CA Leadership

 

Founding Leadership

 

 

Dr. Agnes Tuska

Professor, Credential Advisor, Mathematics Educator

Department of Mathematics, California State University, Fresno

agnes.tuska@geogebraca.org

 

Degrees

B.S., Mathematics and Physics

Eotvos Lorand University of Science, Budapest, Hungary

Single Subject Teaching Credential in Mathematics and Physics

Eotvos Lorand University of Science, Budapest, Hungary

M.S., Mathematics, Ohio State University

Ph.D., Mathematics Education, Ohio State University

 

Areas of Expertise and Interest

  • Teacher Education
  • History of Mathematics
  • Problem Solving
  • International Comparison Studies in Mathematics Education

 

 

 

 

Dr. Rajee Amarasinghe

Professor, Credential Advisor, Mathematics Educator

Department of Mathematics, California State University, Fresno

rajee.amarasinghe@geogebraca.org

 

Degrees

B.S., Mathematics, Colombo University, Sri Lanka

M.S., Mathematics, Purdue University

M.S., Computer Science, Purdue University

Ph.D., Mathematics Education, Indiana University

 

Areas of Expertise and Interest

  • Using technology in mathematics teaching and learning
  • Student attitudes and beliefs about mathematics
  • Interdisciplinary mathematics teaching and learning

 

 

 

 

Mr. Bill Lombard

 

Resource Manager

GeoGebra Institute of California Trainer

bill.lombard@geogebraca.org

 

Degrees

B.A., Mathematics, San Jose State University

Single Subject Teaching Credential, Mathematics, San Jose State University

M.S.T., Mathematics, University of New Hampshire

 

Areas of Expertise and Interest

  • Teacher Education, Mathematics Workshops
  • Mathematics and Technology
  • Problem and Puzzle Solving
  • Mathematics curriculum for elementary and high school

 

 

 

 

 

Dr. Armando M. Martinez-Cruz

 

Professor, Mathematics Educator

Department of Mathematics, California State University, Fullerton

armando.m.martinez.cruz@geogebraca.org

 

Degrees

B.S., National Autonomous University of Mexico

M.A., The Ohio State University

Ph.D., The Ohio State University

 

Areas of Expertise and Interest

Dr. Martinez-Cruz is a mathematics educator specializing in technology use. His research interests include problem solving, problem posing, and learning mathematical concepts in technology environments. He is actively involved in several teacher education programs.

 

 

 

 

 

Dr. Oscar Vega

 

Associate Professor, Mathematician

Department of Mathematics, California State University, Fresno

oscar.vega@geogebraca.org

Degrees

Licenciatura en Matematicas, Universidad de Chile, Chile

Ph.D., Mathematics, University of Iowa

 

Areas of Expertise and Interest

  • Translation Planes
  • Finite Geometries
  • Combinatorics

 

 

 

 

 

Mr. Andrew Hammons

Educator

Joshua Circle Elementary, Hesperia Unified School District

Educational Technologist

andrew.hammons@geogebraca.org

Degrees

B.A. in Sociology, California State University, Fullerton

Multiple Subject Teaching Credential, University of Redlands

 

Areas of Expertise and Interest

  • Blended and remote learning K-12
  • Learning Management Systems
  • Big Blue Button educational conferencing for remote learning
  • MOODLE (Modular-Object-Oriented-Dynamic-Learning-Environment)
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