![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Mohamed-El-Demerdash/publication/307937241/figure/fig2/AS:404391547949063@1473425866756/Checking-golden-ratio-using-the-golden-ratio-compass-tool_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Jana-Trgalova/publication/334135456/figure/fig4/AS:860567564722185@1582186704566/A-screenshot-of-a-c-book-page-showing-three-widgets-Cinderella-EpsilonWriter-and_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
Theories used in paper at the CERME8-TWG15 (left) and CERME9-TWG16 (right) | Download Scientific Diagram
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/publication/310506828/figure/fig3/AS:667603626377245@1536180516987/a-Finding-the-triangle-with-the-least-area-b-Introducing-a-graphical-representation-of_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Elisangela-Espindola/publication/340492478/figure/fig3/AS:877782653476864@1586291101531/Projet-de-la-seance-de-soutien-niveau-1_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/publication/310506828/figure/fig1/AS:430228838326272@1479585956005/a-c-Students-search-for-points-for-which-the-two-variable-sides-of-the-triangle-are-of_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Jana-Trgalova/publication/334135456/figure/fig2/AS:860567564722183@1582186704495/Some-of-the-c-book-widget-factories_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
Left, the GeoGebra representation of the {8/2} star. Right, the output... | Download Scientific Diagram
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Jana-Trgalova/publication/334135456/figure/fig5/AS:860567564726289@1582186704892/Evaluation-of-CMT-cognitive-components-from-the-experts-point-of-view_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![PDF) Impact of Place Value Chart App on Students' Understanding of Bundling and Unbundling | Kevin Larkin - Academia.edu PDF) Impact of Place Value Chart App on Students' Understanding of Bundling and Unbundling | Kevin Larkin - Academia.edu](https://0.academia-photos.com/attachment_thumbnails/64508087/mini_magick20200923-28045-1msm2qo.png?1600927513)
PDF) Impact of Place Value Chart App on Students' Understanding of Bundling and Unbundling | Kevin Larkin - Academia.edu
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Jana-Trgalova/publication/330767053/figure/fig2/AS:721302654578689@1548983362815/Figura-2-Ficha-de-exercicios-do-projeto-de-aula-nivel-1_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Jana-Trgalova/publication/281795888/figure/fig1/AS:421852209258496@1477588812869/Online-questionnaire-for-reviewing-a-DG-resource-in-the-i2geo-repository_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Jehad ALSHWAIKH | Professor (Associate) | Mathematics Education, PhD | Birzeit University, Al Bīrah | Department of Curriculum and Instruction Jehad ALSHWAIKH | Professor (Associate) | Mathematics Education, PhD | Birzeit University, Al Bīrah | Department of Curriculum and Instruction](https://i1.rgstatic.net/ii/profile.image/917399956103168-1595736602486_Q512/Jehad-Alshwaikh.jpg)
Jehad ALSHWAIKH | Professor (Associate) | Mathematics Education, PhD | Birzeit University, Al Bīrah | Department of Curriculum and Instruction
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Jana-Trgalova/publication/334135456/figure/fig1/AS:860567564718080@1582186704383/C-book-technology-environment_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Nataly-Essonnier/publication/338966198/figure/fig3/AS:853695822561280@1580548353215/Model-of-versioning-of-the-c-book-collaborative-design-process-Essonnier-2018_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Nataly-Essonnier/publication/338966198/figure/fig2/AS:853695822565376@1580548353143/The-designers-of-the-c-book-ski-touring_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Jana-Trgalova/publication/321869065/figure/fig1/AS:784224642670593@1563985133679/From-a-didactic-triangle-left-to-a-didactic-tetrahedron-right_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) - Page 2 Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) - Page 2](https://www.researchgate.net/profile/Jana-Trgalova/publication/32231504/figure/fig1/AS:309875524554757@1450891490156/The-Aplusix-ILE_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) - Page 2
![Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE) Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)](https://www.researchgate.net/profile/Mohamed-El-Demerdash/publication/307937253/figure/fig1/AS:613446823444534@1523268528678/figure-fig1_Q320.jpg)
Jana TRGALOVA | Professor (Associate) | Doctor of Mathematics Education | Claude Bernard University Lyon 1, Villeurbanne | UCBL | Institut National Supérieur du Professorat et de l'Education (INSPE)
![Examples of c-book resources produced in the framework of the MC2 project. | Download Scientific Diagram Examples of c-book resources produced in the framework of the MC2 project. | Download Scientific Diagram](https://www.researchgate.net/profile/Jana-Trgalova/publication/334135456/figure/fig3/AS:860567564734464@1582186704543/Examples-of-c-book-resources-produced-in-the-framework-of-the-MC2-project.jpg)
Examples of c-book resources produced in the framework of the MC2 project. | Download Scientific Diagram
![PDF) Comparing theoretical frameworks enacted in experimental research: Telma experience | Jana Trgalova - Academia.edu PDF) Comparing theoretical frameworks enacted in experimental research: Telma experience | Jana Trgalova - Academia.edu](https://0.academia-photos.com/attachment_thumbnails/51287101/mini_magick20190125-23100-h2gs76.png?1548481105)