khan does core curriculum

My dd is in 3rd grade and goes to Sylvan. She has been going about 3 weeks now and really likes it. They also have a website just for her skills so that I can see what she is working on.

Can anyone recommend a math tutoring center or program. DS is going into 5th grade. He does well in math, but wants to get ahead over the summer to qualify for the advanced math class next year. I'm looking for someone who is familiar with and can teach the FCPS 5th grade math curriculum.