A good combination of visual and auditory aids, well-paced teaching
Overall, it's okay. The issue is mainly related to the organization of the content. It isn't structured in a 'chronological' way, whereas you begin with the simpler topics and slowly progress into more advanced topics. Worksheets on the site are just listed from the top down, in no apparent order, grouped into general subtopics. The same principle applies to the videos and puzzles- they're just sort of all there, without much structure or order. There's also an abundance of advertisements on the site which can be off-putting. You don't really know where to begin, but this may only be applicable to the free content on the site.
How I Use It
Khan Academy-esque videos for a younger demographic are best used for the whole class in my opinion. The visual aids worked great, such as illustrations for items in a world problem, and this certainly seems catered towards visual learners.