Why are science shows better than science class?

I love the science shows like Nova and National Geographic channel and Discovery Civilization… the science is interesting… but when I get the textbooks and take science classes I fail to see any similarities and I get frustrated… I’ve failed grade 12 physics twice… I don’t like the math components especially the trig parts…I even signed out an University Physics textbook and very little was taught that was similar to Science Shows…what gives… why does this happen?