You can always use the Bible overlays in the GloBible too. For the resource it provides, it is a very reasonable price at less than $40. I used this Bible many times during the week in my 7th/8th grade religion class.
I've also found a resource that is more expensive (about $70), but is pretty cool. It's the Accordance Bible Atlas. Here's a video that helps understand what the software can do.
Whatever resource you choose, please remember that we think in pictures, so I encourage you to use handouts to help students (both adults and children) connect what they see on the screen. MAPS are fantastic resources for congregational education!
Here are a few other sites that might be helpful when trying to paint a picture of Bible times. Check them out!
Bible History Online - Ancient images that can be used for non-commercial purposes. This website is somewhat of a challenge to use.
Free Bible Images - Images easily found in story line format.
Visual Bible Alive - Images for non-commercial use are free.