My Take
Great tool. Can be expensive, if only one of the many tools you are using with a class, but as a secondary science and math teacher it is well worth it.
How I Use It
As a secondary science and math teacher, I can easily import a powerpoint presentation with an element name or number on each slide, or a sample math question or graph. Students then go to the slide with their element or question and using the voice recording and screen annotation tools they answer the problem while explaining their thinking. A great way to narrow in on student thinking.