There are many apps and websites to help parents when it comes to helping their children with homework. Here's a short list of the some of those sites:
http://products.wolframalpha.com/mobile/
https://quizlet.com/mobile
https://photomath.net/en/
https://www.khanacademy.org/about
http://purplemath.com/
http://mathforum.org/dr.math/
