In my school, the supplementary reading for a given time period is OFTEN way above the reading level of my child. (Laura’s children must have been reading super-stars!) So, I assign separate reading practice. The easiest way is to get the appropriate Sonlight Reader Guide (they have a test on the site to establish the right level) and follow it for reading practice. However, if that’s not to your taste, you can cobble your own together from the right historical time period according to your kids’ reading level.