I am grateful to ASU and edx for letting me try out the ALEKS program for free. However, I thought ALEKS was a complete waste of time. Since I haven't had trig and precal in decades, I really needed to review, especially the trig topics. In around five hours or so I went through 50 topics of the same basic algebra (mainly Algebra I) over and over with tiny variations. Most of that time was spent either entering answers into ALEKS or doing second-grade arithmetic. After learning almost nothing in five hours, I realized I could have spent 30 minutes just reading a math book.