I think the technology in the fifth grade classroom should be that that makes the teacher more efficient. Blackboards are not very efficient. Interactive white boards with good software enables a teacher to reuse material and capture what has worked. It also allows the lesson to be multimedia in presentation which has been shown many times over to be more effective. Embed a flash video into a presentation that a teacher who is very good at what they do has designed and shared. This enables good teaching talent to be available to a much wider audience.
Classroom response systems will cut the time spent grading tests in half. It also lets you test "on the fly" to see if the subject matter is sinking in.
So the answer IMHO, is to make the teacher more efficient, reclaim teaching time, and use proven material available from outside the district.