Review:This is challenging in that there are problems/subjects that due to the Common Core & critical thinking developmental program, are I feel way too advance at these early grades. I couldn't do some of these problems that quickly & not able to teach my kids the concepts so readily (need a real teacher & homework & repetitive learning/practice which had gone by the way side today).

Don't expect my kids to get every answer right - but it is there to be used to be challenged.Read more