Find answers to any math problem and the explanation of the problem on webmath.com If your student is struggling to find the correct answer or needs to know HOW to solve the problem, it is here. I typed in 2^-3 and found out how to do 2 "to the power of" negative 3. Who knew (well, maybe some, if not many of you did) that the answer would be 1/8? My son had this problem in math and really had no idea how to do it. Nor did I remember.
The site offers problem calculation for grades k-8 as well as higher math. Categories include General Math, K-8 math, algebra, Plots and Geometry, Trigonomety and Calculus, as well as "other stuff."
It is a free site by Discovery Education. There is also a link on this site to Cosmeo, a fee for service site to look up problems and answers to questions in common textbooks used in school.