哇，谢谢班长转贴，还给置顶了。一并回答以上几位：

我家老大五岁，对＂Follow the Money＂比较感兴趣。老大三岁对＂If you made a Million＂里的胖娃很感兴趣。

我觉得这两本书的趣味性和知识性都很不错，通过通俗易懂的文字、插画介绍钱币上的总统、数量、钱的流通。在amazon上查看了custom review，找到其他书，看介绍不错。有兴趣的可以根据link去查。

Here is one review for "How much is a Million":

I'm currently a college student, majoring in Mathematics.

I clearly remember this book, and the sequel by the same author, as huge parts of my childhood love for the subject. Its clear and innovative style helped spark in me a deep love of mathematics. I still imagine big numbers as fields of stars and lines of kids holding fishbowls.

This is perfect for any child, it gives potentially abstract and boring numbers a proper sense of wonder. I can't reccomend it enough.