**Volume 12 Number 2**

Published: 27 December 2019

Responsible
Editor: Iuliana Zsoldos-Marchis and Csaba Sárvári (CADGME papers)

**Articles**

1. **Omer
Faruk ISLIM **(Turkey)**, Nese
SEVIM-CIRAK **(Turkey): Faculty Members Vs
Students: How They Use Social Networking Sites Personally and Educationally, 1-14, DOI: 10.24193/adn.12.2.1.

2. **Tuba
ADA, Aytaç KURTULUŞ **(Turkey): Problems and
Solution Suggestions in Teaching Rotation Transformation in Conic Sections*,* 15-28,
DOI: 10.24193/adn.12.2.2

3. **Sevda GÖKTEPE YILDIZ **(Turkey)**,
Seda GÖKTEPE KÖRPEOĞLU **(Turkey): A New
Approach for Assessing Teachers’ Teaching Methods Used in Lessons: Game
Theoretic Analysis, 29-44,
DOI: 10.24193/adn.12.2.3

4. **Liliana
CIASCAI **(Romania)**, Lavinia Denisa ȘUTEU
**(Romania)**, Mădălina CRISTEA
**(Romania): Students future
teachers for primary schools opinion about the university openness towards
innovation, 45-50,
DOI: 10.24193/adn.11.2.4.

5. **Gizem YAPAR SÖĞÜT **(Turkey)**,
Yeliz YAZGAN **(Turkey): The effects of a
non-routıne problem solvıng ınstructıon on the 7^{th}
graders’ braın hemisphericity. 51-60, DOI: 10.24193/adn.11.2.5.

7. **Cahit
AYTEKİN **(Turkey)**, Yasemin
KIYMAZ **(Turkey): Teaching Linear
Algebra Supported by GeoGebra Visualization Environment, 75-96, DOI: 10.24193/adn.12.2.7.

8. **Francisco
Regis Vieira ALVES **(Brazil): Visualizing the
Olympic Didactical Situation. (ODS): Teaching Mathematics with support of
GeoGebra software, 97-116. DOI: 10.24193/adn.12.2.8.

9. **Kani BAŞIBÜYÜK **(Turkey)**,
Ömer ŞAHIN **(Turkey): Mathematics
Teachers’ Opinion about the History of Mathematics, 117-132, DOI: 10.24193/adn.12.2.9.

10. **Patrick TCHONANG YOUKAP **(Cameroon)**, Judith NJOMGANG
NGANSOP **(Cameroon)**, Daniel TIEUDJO **(Cameroon)**, Lawrence NCHIA NTAM **(Cameroon):
Influence of
Drawing and Figures on Secondary School Students’ Argumentation and Proof: An
investigation on Parallelogram, 133-144, DOI: 10.24193/adn.11.2.10.

11.
**Derya Ozlem YAZLIK **(Turkey): Examination of the
metaphorical perceptions of mathematics teacher candidates towards mathematical
proving, 145-160,
DOI: 10.24193/adn.12.2.11.

12. **Ercan ATASOY **(Turkey): Elementary
Mathematics Teacher Candidates’ Geometric Thinking Levels and Their
Self-Efficacy in Geometry, 161-170, DOI: 10.24193/adn.12.2.12.

13. **Oladiran
S. OLABIYI **(Nigeria)**, Adeneye O. A.
AWOFALA **(Nigeria): Effect of
Co-operative Learning Strategy on Senior Secondary School Students’ Achievement
in Woodwork Technology*,* 171-182, DOI: 10.24193/adn.12.2.13.

14. **Sumeyra
DOGAN COSKUN **(Turkey)**, Emre EV CIMEN
**(Turkey): Pre-service
elementary teachers’ difficulties in solving realistic division problems, 183-194, - DOI: 10.24193/adn.12.2.14.

15. **Fulya ZORLU **(Turkey)**, Fatih
SEZEK **(Turkey): Effectiveness of
the Learning Together Method at Different Intervals in Teaching Science, 195-208, - DOI: 10.24193/adn.12.2.15.

The following
articles are extended versions of the presentations given at **7th Computer Algebra and
Dynamic Geometry Systems in Mathematics Education (CADGME)** conference at the University Coimbra,
Coimbra, Portugal, in June 2018

16. **Celina A. A. P. ABAR **(Brazil)**, Ubirajara Carnevale de MORAES **(Brazil): Flipped
Classrooms and Moodle: Digital Technologies to Support Teaching and Learning
Mathematics, 209-216, - DOI: 10.24193/adn.12.2.16.

17. **Eleonóra STETTNER **(Hungary)**, Rózsa NIENHAUS **(Hungary): Traditional
Patterns of Easter Eggs in the Carpathian Basin and Spherical Symmetries,
217-224, DOI: 10.24193/adn.12.2.17.

18. **Renáta
VÁGOVÁ **(Slovakia)**, Mária KMETOVÁ **(Slovakia):
GeoGebra as a Tool
to Improve Visual Image, 225-237, DOI: 10.24193/adn.12.2.18.