Elementary engineering : bridge design, grades 3-5 /Publisher: [Ames, Iowa] : Iowa State University, University Extension,
Date: 1999. This title can be found in 3 Iowa libraries.
The Exploratorium guide to scale and structure : activities for the elementary classroom /Author: Kluger-Bell, Barry.
Publisher: Portsmouth, NH : Heinemann,
Date: c1995. This title can be found in 2 Iowa libraries.
YOU MAY BORROW ITEMS YOU FIND IN THE SILO LOCATOR THROUGH YOUR
LOCAL PUBLIC LIBRARY.
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