How does the big dipper change over the four seaons?

The Big Dipper not only circles the North Star every night and day, it also circles it more slowly every year. Think of it this way: If you looked at the big Dipper and could watch it for a 24 hour period, you would see it go from it's current place in the sky, all the way around until it was back in the place it was when you started watching it 24 hours earlier. However, in early evening winter, the Big Dipper is to the East of Polaris. In summer the Big Dipper is west of Polaris during the early evening hours. Just like the constellations - they rise and set because Earth rotates on it's axis, BUT because Earth ALSO goes around the sun, the stars seem to switch positions from winter to summer.