This is a wonderful story by a girl about her experiences with math... have your kids read it!
Note how she learns when the teacher allows her to correct her mistakes in a test. I definitely advocate that. In fact, I give my kids HALF of the points they COULD have gotten at first, if they get a test question correct when they revise it.
Tests should be LEARNING tools, and help children learn, just like everything else we do in teaching them, and NOT "scary judgment devices".