It depends on the preschool, but the teacher might be called Ms and their first name or Ms or Mrs. and their last name. Often it is Ms and their first name.
The title of a person who teaches preschool is usually "preschool teacher."
Preschool teaches pre-math and pre-literacy skills that are important for kidergarten. It also teaches them appropriate behavoir and social skills that are important when they start kindergarten.
A person who teaches is a teacher
A person who teaches about plants is called a botanist or a horticulturalist, depending on the specific focus of their expertise.
A daycare attends to a child's needs for a period of time; a preschool is more stuctured and teaches the child to attend to his/her own needs.
A person who teaches English in a department can be referred to as an English instructor, English faculty member, or English professor, depending on their level of experience and qualifications.
You should call a preschool and ask what sort of certification you need to run a preschool. You can also call colleges and get this information as well.
A person who teaches baking (bread, cakes, and so on) should usually be a qualified baker.... or a Pastry Chef.
A person who teaches people how to speak a language is called a language instructor or language teacher.
um, a math teacher
A person who instructs or teaches is called a teacher or instructor.
In the UK a person that teaches you how to fish is known as an angling coach.
A person who instructs or teaches is commonly known as a teacher or an instructor.