I used the AChecker to check several Websites that I have
referred students to in the past or that I learned of in this course. On the first two sites, www.tedsundstron.com/mathreasoning
and www.mathtv.com, there were no problems.
I then checked www.patricJMT.com
and it had 3 known problems and 6 potential problems. Next, I checked www.Mathispower4U.com ; this site had a
large number (75) of known problems and even more (179) potential problems. The next site I checked, www.HCCMAthHelp.com , had no
problems. Finally I checked www.khnacademy.org and found 2 known problems.
Most of the sites were accessible and Mathispower4U has most
of its errors on a few lines.