I absolutely loved this book, it was exactly what I was looking for as I prepare to reinforce math knowledge with my son who is currently attending a fantastic Montessori school. The methodology and exercises, while different, certainly align with the Montessori Method. I had tried numerous math workbooks at home but Singapore Math felt like the most rigorous and complementary to what he is doing in class. This book is a godsend as it helps me brush up on many of the standard algorithms and mental math tricks to reduce cognitive load during the lessons. I also love that Singapore math uses manipulatives and pictures before going abstract. Highly recommend to any homeschooler or parent who wants to be able to help their child with homework and revision.