Description: GeoGebra is free and open-source dynamic mathematics software for all levels of education. It combines geometry, algebra, spreadsheets, graphing, statistics and calculus in one easy-to-use package. It can be used to teach math from elementary through university level.
Type: software
Pricing: Open Source
Description: Google Groups is a free discussion group platform from Google that allows people to have online conversations by email or on the web. It offers public and private groups to foster communication between specific teams, organizations, or wider interest-based communities.
Type: software