[Do the math]

I can teach mathematics without any textbook, a calculator would be nice yet it is not necessary. I can use rubber bands to get linear, quadratic, and logarithmic functions. Give me a chalkboard, and I can bring mathematics alive. I have taught at several universities, and been an invited lecturer at dozens of schools. I have taught over seventy different courses at the undergraduate and graduate level. I am a published author, and have discovered thousands of new formulas. I have taught ACT, SAT, and GRE prep classes. I can convince you that a negative number times any other negative number is positive (no it's not a damn rule). However, I am not qualified to teach even at a middle school, because I do not have a teaching certificate. Money is not the problem. So called “educators” are the problem.

[Cincinatus' Wife]

....However, I am not qualified to teach even at a middle school, because I do not have a teaching certificate. Money is not the problem. So called “educators” are the problem.

bttt!

[Arm_Bears]

Ah, yes—The “credentialing” racket.

Further insulating the academy from the real world.

My situation is similar to yours. I hold a Ph.D. in applied psychology (industrial/organizational) and have worked in the private sector for over 25 years; including running my own small business for the last 10+ years. Recently, I applied for a faculty position in management/organizational development at a local junior college. Blew the other candidates away in the practical application of principles phase, which was the most heavily weighted part of the interview process. But, because I didn’t have eighteen hours in Business at the graduate level, I was not selected.

[Lorianne]

Well said.
Money is not the problem. I’ve seen students being taught math with a stick scratching out math problems in the dirt. If the teacher can teach and if the children want to learn (key) then you can teach math.

For reading you do need some books, but not much else.

It’s not expensive to teach or learn. What is expensive is carrying a huge bloated bureaucracy and expensive facilities that are for the most part not needed