I've used CLE Math 100 with two children and we found the teacher guides essential since, as mentioned previously, there are story problems and read alouds you dictate to the child from it. Also, the flashcards are very helpful as is the 100 chart. It will ask your child to use a dry erase marker to color odds, evens, skip count, etc. at certain points in the book. Having this laminate chart is helpful for them to visualize what they are counting. I have found CLE math to be an excellent program. I hope you enjoy it!