Math tutoring for children of ages 5-18.(Use of mental math and abacus techniques can be provided if wanted)

I'm 19 and a STEM major. I've always loved Mathematics and since childhood I've learned different ways and techniques in solving various problems- basic as well as advanced. And I can teach the same. It includes vedic math, mental math techniques and the use of abacus for faster calculations. If needed I can teach short tricks using these, or I can simply teach them the easiest ways of going about the given problems. Anything works as long as I make them understand what they are supposed to do. Helping with homework is added alongside exam prep.