Recommended Websiteshttp://www.easycalculation.com/area/pyramid.php - a calculator for area and volume
http://virtualnerd.com/ - a good website for explanations of math vocuabulary and procedureshttp://www.khanacademy.org/
- all types of mathematics such as algebra and arithmetic ratio and proportion practice, computer science
http://tenmarks.com/ - for teachers and students to practice all types of math with videos and explanations. You must create an account, but it is free. You do need a valid e-mail address to create a teacher account, but you can set up classses with students with a login/password system (no student e-mail needed).
http://www.homeschoolmath.net/worksheets/proportions.php - proportionshttp://www.mathslice.com/ - games, Roman numerals, ordering numbers
http://www.ke4nyv.com/math.htm - Electronics and programming math, binary, hexadecimal, Ohm's Law, Power Formula
http://101science.com/Radio.htm - Electronics and Math, DOE math handbook, Roman Numeralshttp://www.brightstorm.com/math/ - videos on mathhttp://www.regentsprep.org/Regents/math/ALGEBRA/math-ALGEBRA.htm- example algebra test questionshttp://www.regentsprep.org/Regents/math/geometry/math-GEOMETRY.htm- example geometry test questions
http://www.onlineconversion.com/- convert between different units.