Clifford (Up and Down) (木板书)

出版时间：2004年09月  出版社：Brdbk edition (2004年9月1日)  作者：Dena Neusner  

内容概要

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  The concepts of up and down are so much easier to explain when Clifford's helping out!  Paper-engineered moving parts allows kids to experience the act of sliding objects up and down, with cute text that makes the concepts crystal clear.  The oversized flaps reinforce the ideas with funny surprises hidden behind their adorable pictures.