I would recommend previewing the art lessons–we’ve done a few and not had problems. But really, differential equations and linear algebra and factoring binomials ought to be about the same, secular or Christian. This is a tremendous resource with up to college level content and FREE. We use it heavily.
My kids also use Khanacademy at times for math. (not our only math program – but they go through periods of wanting to “play” it.) My son likes to try to earn the badges.
I personally didn’t like the couple of videos I watched for math – just not the way I would go about teaching those concepts… But every now and then, I go on there too to review. I started with ADD1 and worked from there…
Well, my post did certainly come across as the grinch! Didn’t intend that, just had a minute to post and didn’t want anyone to just start watching videos with their kids without realizing that it’s not a Christian, homeschool type website that we are often used to. So I suppose that not all of their math videos will have word problems based on miniskirts, dancing, or eating sugary treats.