Introductory Note: I purchased all of these on my own. I did not receive a free copy to review. Hence, these are my honest opinions and assessments on the curriculum.
I was looking for additional math fact practice and didn’t want to spend the time, effort, energy, and money in printing out my own off the Internet.
So I found Kumon.
These books are great and are cheap off of Amazon.
I purchased the Addition and Subtraction for Grade 1 and 2. Both are filled with problems that teaches in a progressive manner, introducing one concept at a time, practicing it, and then building upon it.
Conclusions: These have turned into life-savers because I use them as filler time when I’m teaching one kid and the other is waiting. Great for extra practice and variety in any math program. Good value for the price.