How many stars are in the Big Dipper?

You can see 8 - 4 stars make up the "bowl" and three make up the "handle". The middle star of the "handle", Mizar, if you look REALLY closely, has another tiny star (called Alcor) near it. They are called the horse and rider. However, if you look through a powerful telescope, Mizar is actually a system of 4 stars.