Nothing new about alphabets or numbers. But this book does combine them so you can teach Math and English in the same book! That said, someone somewhere didn’t just drop the ball but plain old refused to catch it when it comes to editing. We ought to use plural form of words when counting anything more than 1.
Also, the numbers only go up to 10. Thus, unusual
2 ⭐️⭐️rating for me. My heart goes out to the author though. It really does. Download it if you can read it for free. It’s not a bad book.