Seeing the picture helps you show what information you are given, what you need to find out, and develop a plan for solving.
Have you checked out the math textbook online? If you go to my website, you'll find a link with information on how to log into the Math In Focus online materials. Once logged in, you can go to "My Library" to see interactivities for your child, the online textbook (in case the hard copy was left at school), and a collection of videos which focus on each chapter as well as videos designed for parents to help their children with homework. It's awesome! If you need help getting to it, please let me know and I will do my best to help you.
Click this link to get started:
http://www.claytonschools.net/site/default.aspx?PageType=3&ModuleInstanceID=11762&ViewID=7b97f7ed-8e5e-4120-848f-a8b4987d588f&RenderLoc=0&FlexDataID=21053&PageID=9730
Good luck and keep us posted with how we can help. I am always happy to provide a little crash course in bar models for parents before or after school sometime.