The NCTM website is one everyone is familiar with; there are a lot of resources here that are great for explaining concepts. This is an interactive activity working with vectors to help students understand basic facts about the difference between magnitude and direction.
This is a great math site. It includes sections for activities, lessons, standards, and web links. The activities and lessons are grouped into grade levels to facilitate your search.
This website contains flashcards and games to help students improve their math skills interactively. It also contains worksheets that students can print and work on. The website also has the answer sheets so students can check their work. There is also a "homework helper" tab that allows you to input your problem and answer and it will help you figure out if you are correct.
This site caught my attention when I saws it listed teacher interview questions and went on from there. May be helpful to new teachers..... Edit-looks like that interview blog didn't post. Not sure why...
SciGirls Video Podcast | 112 Star Power | SciGirls, a PBS KIDS weekly series and website, is out to change how millions of tween girls think about science, technology, engineering and math, or STEM! In each episode, animated characters Izzie and her best friend Jake find themselves in jams only science can fix.
Here's a textbook assigned in at least one other Gordon class. It presents a model of teaching mathematics that is far more engaging for students than what you and I likely remember. It's free by using your Gordon library number, so this could save you about $40 as it did for me.
I had never heard of these guys until Mark brought them up in class. I had to check it out. Now I'm trying to see how we can integrate their songs at our school. I have even passed it on to my principal. It's right up his alley!