Abstract

GeoGebra, a free, open-source, dynamic mathematics software, is rapidly gaining popularity in the teaching and learning of mathematics around the world. Currently, GeoGebra is translated to 55 languages, used in 190 countries, and downloaded by approximately 500,000 users in each month, and clearly making an impact on mathematics education in most countries. This increased use compelled the establishment of the International GeoGebra Institute (IGI) that serves as a virtual organization to support local GeoGebra initiatives and institutes. There are already 132 institutes in 67 countries, which pursue training and support of teachers, develop teaching materials, and carry out research projects. In this talk, I will outline the directions of GeoGebra software development, its extension to STEM subjects, activities of its community, and the work of GeoGebra Institutes.