Books like The Usborne Illustrated Dictionary of Math

I would strongly recommend this book for home school kids as a reference. It should take you through the average middle school track and some algebra and geometry concepts as well. It lists some good websites, which I am always looking for to make my own resource sheets for the kids I tutor.Here are some of my favorites that I have found over time:http://www.coolmath.com/http://library.thinkquest.org/20991/h...http://www.regentsprep.org/Regents/ma...http://www.algebasics.com/index.htmlhttp://math.hippocampus.org/http://www.e-zgeometry.com/And this one is fantastic with lessons on hundreds of topics:http://www.khanacademy.org/