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)
