Using Adobe Flash as a software for making online activities is really hard. You have to buy the software, learn how to use it, and then think of kinds of activities. Fortunately, classtools.net helps you by offering an authoring tool. You can create flash activities for your web site, all without knowing flash. You use templates and add your own content to the activity types. The first one is the hardest, and after that they are easy. If you are a little bit of a geek, you will like this.