PPT Slide
5. Add to this the appropriate number for what you intend to do. Let us say that you found 49 polysyllabic words. The square root of 9 is 7. Add 2 to this for the level for which this book could be used by a child for instruction. Add 3 for the level the child must be able to read independently.
What if the child is only able to read at an eighth grade level?
He will likely be reading on a frustration level.