A variety of idioms related to money and numbers, are explored and explained…such as “on cloud nine”…”at sixes and sevens”…”the whole nine yards”.  Each chapter covers a two page spread discussing the possible origin and/or explanations of the idiom.  Thirteen idioms are included, in all.  “The whole nine yards”  (meaning all of something) has an unclear origin.  It may have been related to an order for a large wedding veil…or maybe it relates to a concrete truck which can hold approximately 9 cubic yards.  The design of the page layouts are visually appealing with a peppering of illustrations mixed with photographs.  I have two concerns for this well, put together book.  First of all, the font size is too small, which is not friendly on young eyes.  I have seen kids open a book, and close it quickly, if the font is too small.  Secondly, the phrases chosen to be included, are somewhat outdated for the targeted audience.  Back Matter includes Glossary, Further Reading and Index.