Websites added to my portfolio

Just like my prior post on my review of an APP, I was asked to looked at different websites and see what ones would be most beneficially to adding to my portfolio. 

I googled: "online math activities". Below are the top sites that I would like to use in my future classroom:

http://illuminations.nctm.org/ActivitySearch.aspx. 

Used for grades K-12th. Great look and feel. 

http://www.sheppardsoftware.com/math.htm. 

Amazing and easy to use. Format is easy to read and math skills are split out based on what the focus is.

http://www.kidsmathgamesonline.com.

Is a definite to have in the classroom. Material can be printed and used in the classroom 

As a soon to be teacher it is important that all websites be looked at for content and structure. I don't want to incorporate anything into the classroom that is a bunch of junk and not useful to my class. I also think it's important that before you pick a website to use as supplementary materials, that you first learn and know your students. Not all sites are going to work with every class.