Kids have natural and intuitive stages of development.
They don’t need to be force-fed letters and numbers at certain ages to learn effectively and efficiently. They don’t need to stand in line, stand up and say the pledge, follow guidelines, and consume endless hours of non-essential information to grow to be intelligent, cognizant, and wise human beings. The only thing they need is inspiration and a nurtured sense of curiosity. Textbooks, outlines, documentation, tests, and grading are all archaic and unnecessary means of teaching our children.
Humans are naturally curious and intuitive. It is commonly shut down by the parents themselves, if not the schools, churches, and their immediate cultural limitations. Education doesn’t require institutional facilities to develop young human brains. What is going to help your children to learn is to allow them to explore what they find most fascinating and intriguing and tie the necessary elements of educational development to it. Which is, in most cases, going to begin somewhere in the areas of art and/or music. Music is math and language. Art is math and language.
Allow them to explore what most inspires them and the rest will fall into place.