Answers (2)
When students teach a subject outside of their expertise, this allows them to develope communication skills in the classroom so this way you can teach a subject you want even better than the subject you taught but might not have been as passionate about. Things you already know you can explain, but when you’re faced with an unexpected change as an educator, this helps you prepare for this as well. Teachers need to be adaptable; the way you are supposed to educate varies by school or area.
What a strange question. If you want to be a teacher, you learn how to teach. If "educator" means something other than "teacher" then you are on your own.
The first requirement to teach any subject is to learn it yourself. Many people only pick up impressions of math. Then they try to teach their impressions, and can't figure out why the students are not learning. A child learns arithmetic by measuring things with a ruler. A ruler is divided into fractions, so the child learns fractions in one afternoon. Teachers spend years trying to teach fractions by showing their classes bits of colored paper. Algebra teachers stumble because the teachers never learned that they are dealing with pattern recognition.
We have an entire generation of people who don't know what science is. They only know a collection of impressions that are called "science". Ask them to present a demonstration and they will show a volcano with vinegar and baking soda. And they have a hard time inventing that much.
Chemistry was invented by a man named Antoine Lavoisier. He wrote a book detailing his experiments and the instruments he had to build to measure things. Chemistry is taught as the study of substances when in reality it is the study of MEASURING substances. smile.amazon.com/Elements-Chemistry-Antoine-Lavoisier/dp/1514762471/ref=sr_1_6
There are endless examples of teachers trying to teach subjects they never learned.