I just reread Chip Wood's Yardsticks. His recommendation to schools is, "Children are asked to do extensive memorizing only when they reach ten, the age at which their skills at this activity are normally at their zenith." Anyone have anecdotal evidence for or against that? I've been noticing kids in my 3rd grade class have a lot of difficulty memorizing multiplication facts. My DD is in 4th and also cannot seem to memorize facts yet.