Kim,

The manual cover is the quick way to identify which version you have or used books you are considering purchasing. We continually make corrections which are posted on our website: http://www.alabacus.com/index.cfm?pageID=304

The current manual and worksheet covers are laminated covers with a colored band at the bottom and the "Activities for Learning" name in white on the left. One version older had stiff heavy covers with the same design. The newer books have a printing date below the ISBN number.

We did a major rewrite of the Level C, D and E Lesson manuals in June 2004. These old manual covers were much softer, less durable, and had a colored border around the graphics. The "Activities for Learning" name is in black on the bottom centered. These were published from approximately 2003 to mid-2004. There is an even older version with the "RightStart Mathematics" name in blue across the top and the Level identification in a colored band near the bottom. Graphics on this old version include geometry tools and an old pink and purple abacus.

Kathleen