Archived Story: This article is part of our newsletter archives. It has
been preserved for reference, but the information may no longer be current.
Illuminations has resources that promote algebraic thinking at every level. Check out this suite of sweet apps that promote algebraic thinking.
https://www.magnetmail.net/actions/email_web_version.cfm?recipient_id=1107352617&message_id=2498542&user_id=NCTM1&group_id=955276&jobid=13081285