I saw a very similar timely appeal here on Hacker News a few years ago and taught my son with this book at the age of 4. It has become my go-to comparison when prompting chat bots on what I want in a teaching material for other subjects. I listened to the entire article posted here and it makes me wonder if schools are getting something as foundational as reading wrong how can we trust the attention to research on anything else they're teaching? Don't get me wrong, I'm not going to pull my kid out of school but I'll dig a little deeper into how well he's learning. For math, we've been doing the Beast Academy books. It has gone... Okay. I like that they approach problems from many different ways which simulate the many different ways math is hidden in our interactions with the world. For my younger son I've recently started Teaching Your Child... because of how well it went for his brother but for math I may try something else to have a new data point. Something that occurred to me listening to the article is I wonder if certain skills are learned much faster with one on one instruction like the book has you do. Our schools pretty much never teach that way out of efficiency, though home schools often do. It may not be true for most subjects though or home school students would be so far ahead by college and that's not the impression I have.