There are many valuable resources that can be found on the internet to help both students and their parents. The following websites may be useful to you.
This website has a lot of online activities for students to use. It has brainteasers, problem solving, activities, geometry, dictionary, math games, math help, math links, math magazine, money and investing, and pattern/symmetry/tessellations.
This page will give you short informational videos based on the Math lessons your child is working on in class. Choose the grade level, the Module, and the lesson you would like to see.