The majority of my math education came from my sister who was a few years ahead of me in school. She'd learn w/e they were teaching, then would teach it to me

The majority of my math education came from my sister who was a few years ahead of me in school. She'd learn w/e they were teaching, then would teach it to me at night. I'm forever in debt for this early education as it'd helped me in so many aspects of my life.