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Earth & Sky Radio Show Correlations
Read the article In Search of the Perfect Tree Cookie to help complete Activity 76
Identifying types of end grain in tree cookies (scroll to second page)
A Machine That Turns a Tree’s Rings into a Musical Score
http://www.acornnaturalists.com/ (Acorn Naturalists may refer to them as "tree rounds" though)
http://www.nature-watch.com/ (Tree cookies are called tree disks, a pack of 25 is $13.00)
The Big Tree. Hiscock, Bruce. ISBN 1563978105. Publisher: Atheneum Books –MacMillan. 1991. Follows the development of a large old maple tree from its growth from a seed during the American Revolution to its maturity in the late twentieth century. Grades K-4.
Yonder. Johnston, Tony. ISBN 1586851802. Publisher: Holt. 1988. Year after year, the plum tree which the farmer planted is witness to the continuing generations of his family. Grades K-3.
Outside and Inside Trees. Markle, Sandra. ISBN 0027623130. Publisher: Simon
The Ever-Living Tree: The Life and Times of a Coast Redwood. Vieira, Linda. ISBN 0802774776. Publisher: Walker. 1994. The story plots the march of time as major events in history unfold next to the growth of an ever-living sequoia. Grades K-3.