The following links are here to help students and parents on homework. These are not the only resources that can be used but ones that cover all the topics on the homework assigned.
Big Ideas Math Solutions has the stepped out answers to all the odd numbered questions in the book. This is a tool to help students understand how a particular question is answered or to find a mistake in their answer. It is not to be used just to write down an answer. I assign even and odd questions to ensure students are not misusing this tool.
Youtube is a great resource and has hundreds of videos for every topic covered in high school and middle school math.
Forgot your book at school? No problem! The two buttons above take you to free access to your books.
Kahn Academy has thousands of free online instruction videos. Simply search what you are confused on or the topic you need help with.