I love the sound :). It's fun to "pop" the bubbles and it really does give an intuitive sense of the process of evaluating a statement. Give it a progressive framework of concepts to explore and embed it in a pleasing page and you might have something neat. Good job.
A couple of quick searches indicate that this is a well-regarded application. Thank you for your recommendation.
A quick review of your comments here indicate that you're an OK person. I enjoyed your review of the Highlander franchise, thanks.
I happen to be one of those liberty-or-death types when it comes to software licenses. Doubly so for educational software!
I ... I can't trust a company to educate a child. Their goals are just too much different than mine. [The pessimist in me says that] They'll never provide a copy of their internal design documents so that future educators could improve upon their craft.
A teacher would share his lesson plans, and a Free Software developer would share her code.
I can't send a dime to an educational software company because (apologies to various humans and their families in advance...) I want all such companies to dry up and cease to be, in order that teachers and Free Software developers would have a better chance to thrive.
