I am looking at the book right now : ) Being a home schooling parent, I am always looking for materials to use for free or barter. This one was brought to our towns "transfer station" (dump) and "transfered" to me. Even though my son is a 7th grader, it is full of usefull and fun ways to show how all math connects to all things in some way. Hence the importance of understanding it conceptually.Very good resource that I would suggest for any age child or adult for that matter. : )