Math is quite a challenge for fourth graders.  All of there resources can be found on line.  Text books, workbook pages, and even online tests can be found at this website. Your login is your child's first initial followed by their last name without spaces or capitals.  The password for all kids is mathisfun.  I highly recommend using this site on a regular basis.

This is a website that will be used in class.  It is a wonderful way to address word problems.  Using the bar models ensures that your child is using a plan of attack to find the answer.