If you haven't heard, in particular, the first hour of Once Bitten #444 and you have a 4 year old you are homeschooling, I cannot encourage you enough to both check out that content.

This is a critically important time period for your child. Right now, their brain is in a theta neural oscillation dominant state and will remain there until they turn roughly 7-8 years old. Theta neural oscillation states are states of high suggestibility and rapid learning. This is the time period during which phenoms get their edge over their competition.

I specialized in math and critical thinking but a lot of my knowledge will transcend single subjects if you understand it and apply it.