Fun with Roman Numerals by David A.Adler, illustrated by Edward Miller III

Now that I'm on the hunt for picture books for the older set, this caught my eye..

Fun with Roman Numerals

I don't think my kids will be overjoyed to see it but I do think they will be interested. And it is interesting! Surely knowing roman numerals is a useful skill to have? And maybe if I try to fill their heads with useful knowledge, it will squeeze out some of the Pokemon rubbish currently residing there.
P.S. We read this last night and it was excellent. A crystal clear explanation that left us all fluent.