My Take
I think that this is a great teaching tool for a math educator teaching the common core standards. This program allows for differentiation, and gives immediate feedback to students on their performance. This website also gives educators student performance data, so it is easy to look and see what students are struggling or success with each of the various standards.
How I Use It
I used this website in my classroom during math center time, as a way for students to practice specific common core math skills individually. This program allowed for me to assign specific tasks to individual students, so they can gain experience with challenging tasks, or move on to something more difficult when they were ready to progress.
This program can also be used at home, so students can practice or refresh their skills we are learning in the classroom.