We tried the stories, but I am not sure that it would be the same for the elementary series. My ds 9 read through Apples in 2 weeks on his own. Much of this was review. He started Butterflies today. I had him answer the questions on paper and check his own work. Then for more practice, I had him make up more questions just like the ones he just answered by changing the names and numbers. Then he had to answer them. This was quite a challenge for him to do and I wonder if I should select one or two instead of them all. We will see if he gets quicker at doing this. He may need to dictate some of them to me, for the sake of time. Perhaps for the elementary level, this is similar to jotawatt’s math stories.