Of me being a teacher of any mathematics, I have always wondered how to teach children math and could not find the answer. Then I decided to look for different sites on the Internet, I skipped many paid sites because I don’t want to go through the first time for my training. Then I stumbled upon this site and my progress in math immediately went up, I studied math here for several months and I already know almost all the basics for a normal and future life, without calculators and difficulties at the checkout.