My Take
This product is a great resource, but as others have previously mentioned, it is quite costly. The material is fresh and relevant. But some of the videos were more animated and that was a problem for older kids. I would use a supplement to my curriculum.
How I Use It
I used this product to reinforce content as well as introduce my students to brand new concepts. The kids really are engaged to the animations and it helps them to understand the content in a meaningful and relevant way. This is video based instruction so there might be limitations of its use based on technology that you have present in your classroom. If you are in a computer lab, you can have the students watch the videos in small groups or as individuals. If not, you can present one video at a time to the class.