We are using Eureka this year in Math 7. We also will use Big Ideas Math as a resource.
Your child will not be bringing home an actual math book. They will be getting packets for each unit where most of the homework assignments will be.
Check out the Khan Academy website for additional resources.
Another resource wil be Big Ideas Math. Please visit www.bigideasmath.com. Click on "Looking for easy access materials". This will bring you to a screen where you would need to choose the student tab. It then looks as you should enter a username. This is not necessary, scroll down and beside where it says "Common Core 2014" click go. Then choose the red book to take you to the resources. There are online practice quizzes and games!