This virtual classroom/web meeting application allows you to meet with up to 200 people for free. You can video chat, share your screen, run polls, and present PowerPoint shows.
Virtual classroom with whiteboard, text chat, audio chat. You can upload images to the whiteboard, draw, and enter text. No registration required. Words on iPads as well as web browsers.
Limitations: No video chat. No option to upload a PPT or PDF.
"Find popular sayings and proverbs in Spanish with their translation into a variety of other languages in this searchable database from the Centro Virtual Cervantes"
Google's social network. The "hangout" feature lets you do videochat, including some virtual classroom tools.
Limitations: Hangouts are limited to 10 participants.
The Latinum Electronicum is an interactive Latin course which teaches the basic knowledge of Latin. The course was developed within the framework of the "Virtual Campus Switzerland" in three languages - German, French, and Italian. In 23 lessons, students can learn Latin and also prepare for the qualification in Latin exam. Animated graphics facilitate the comprehension of those grammatical topics that are especially challenging: for example, the ablativus absolutus and six other syntactic phenomena are described through the use of example sentences which are analyzed and translated before the eyes of the learner.