Parallel Sessions Tuesday, 18 July 2017

Secondary Geometry - 9:45 to 11:45 - Room S3 - 1

09:45 - 10:05Tim Brzezinski (USA) Using GeoGebra to Discover, Remediate, Differentiate, and Assess (& Why I Created all I Did)
10:10 - 10:30Gerrit Stols (South Africa) Transformation of images using a matrix
10:35 - 10:55Javier Antonio Ríos Rivera & Anuar de Jesùs Oyola Charry (Colombia) The comprehension of the trigonometrical reasons by means of the software GeoGebra in the context of the model of Van Hiele
11:00 - 11:20Bruno Leite Ferreira (Brazil) Conic Sections' study using GeoGebra applet
11:25 - 11:45Irma Zulema Martínez (Argentina) Transformations in the plane

Teacher Education - 9:45 to 11:45 - Room S2 - 3

Calculus - 9:45 to 11:20 - Room S2 - 2

09:45 - 10:05Laura Del Río (Argentina) Visualization of limits of functions of two variables
10:10 - 10:30Hans-Jürgen Elschenbroich (Germany) A visual approach to basic concepts of integration
10:35 - 10:55Steve Phelps (USA) Next = (Now + 1) / Last
11:00 - 11:20Andreas Lindner (Austria) Learning Advanced Analysis with GeoGebra

ACA Conference - 9:30 to 11:30 - Room S2 - 5

Live Video Streaming to the Conference on Applications of Computer Algebra in Israel http://www.aca2017.jct.ac.il/
09:30 - 09:50Thierry Dana-Picard (Israel) Automated study of a curve and its associated curves: the case of an astroid
09:50 - 10:10 Jiri Blazek & Pavel Pech (Czech Republic) Investigation of geometric loci using DGS and CAS
10:10 - 10:30Roman Hasek (Czech Republic) Automated theorem proving in school mathematics
10:30 - 10:50Rob M. Corless (Canada) Computer-mediated thinking
10:50 - 11:10 Zoltan Kovacs (Austria) Achievements and challenges in automatic locus and envelope animations in dynamic geometry environments
11:10 - 11:30Tomas Recio (Spain) Automated Reasoning Tools in GeoGebra

Modeling - 14:00 to 16:00 - Room S2 - 3

14:00 - 14:20Cecilia Zulema González & Marta Fabiana Pauletich (Argentina) Adjusting parameters on a mathematical model using GeoGebra
14:25 - 14:45Chris Cambre (Belgium) Euler and the bridges of Königsberg
14:50 - 15:10Irina Boyadzhiev (USA) GeoGebra – an environment for diverse applications and explorations
15:15 - 15:35Matěj Adámek (UK) Geogebra and Economics
15:40 - 16:00Mariana Gabriela Torres (Argentina) Dynamizing a solution of revolution with GeoGebra

Secondary Geometry - 14:00 to 16:00 - Room S2 - 2

14:00 - 14:20Steve Phelps (USA) What-If-Not Conic Constructions
14:25 - 14:45Anthony Or (Hong Kong) Volumes of Pyramids and Spheres in Ancient Chinese Mathematics
14:50 - 15:10Petra Surynkova (Czech Republic) Kinematic Geometry: Constructions of Planar Curves
15:15 - 15:35Amarzaya Amartuvshin (Mongolia) Construction of conic sections
15:40 - 16:00Bed Prasad Dhakal (Nepal) Tangent has two point contact with the curve

STEM - 14:00 to 15:35 - Room S3 - 1

14:00 - 14:20Mónica Ester Manceñido (Argentina) Using GeoGebra to aid in making a pre-telescopic astronomical device: gnomon shadow markings
14:25 - 14:45Horst-Armin Kosog (Germany) Daylength and Seasons
14:50 - 15:10Hans-Jürgen Elschenbroich (Germany) Modelling the growth of a crystal
15:15 - 15:35Diego Lieban (Brazil) Geometric Modelling in a Teacher Training Program

Making Math Visible - 15:30- 17:00 - Room S2 - 4

15:30- 17:00George Hart Workshop Making Math Visible

Topic Discussion Groups - 16:30 to 17:00

Developers Questions & Answers Room S2 - 2
Professional Development & Teacher EducationRoom S2 - 3
New website structure: material categories & community groups Room S3 - 1