Connecting with History is a curriculum syllabus which explains why and how to teach all ages at once.  One family studies the same time period at the same time, each age group reading and studying at their own level.  The program contains background information about the time period, family discussion starters, ideas and instructions for each child to compile a history notebook which is added to as they study each time period, writing ideas, hands-on activity ideas, reading lists broken down into four main ages levels with daily reading suggestions. 

That's a quick overview.  For more information and ideas I recommend you join our email discussion group at
http://groups.yahoo.com/group/connect_with_history/