Mirage applications are intended to be used in science classroom (senior high school). To use this application you need to download and print the marker set: http://mirage.ticedu.fr/?p=2324
How to use the app : Card 1 :Find out what this molecule is and write one sentence about the molecule's geometry ? Card 2 to 6 : Try to explain the following molecule's geometry. (hint : use Lewis, electrons pairs, lone pairs...) Card 7 to 11 : answers for cards 2 to 6, showing molecule's geometry, electrons pair and lone pairs. Card 12 : final answer for cards 1, molecule showing molecule's geometry, electrons pair and lone pairs.
Once downloaded this one does not require an Internet connection.