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This filmstrip and accompanying text were discovered in the archives of the Iowa Geological Survey in early 2008. A suitable filmstrip projector was not available. The filmstrip itself, believed to date from circa-1971, was deteriorated (see below). The filmstrip was scanned and color restoration...
Grade Level
K
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Presentations
Teaching Media
2
This filmstrip and accompanying text were discovered in the archives of the Iowa Geological Survey in early 2008. A suitable filmstrip projector was not available. The filmstrip itself, believed to date from circa-1971, was deteriorated (see below). The filmstrip was scanned and color restoration...
Grade Level
K
1
2
3
4
5
6
7
8
9
10
11
12
Presentations
Teaching Media
3
This filmstrip and accompanying text were discovered in the archives of the Iowa Geological Survey in early 2008. A suitable filmstrip projector was not available. The filmstrip itself, believed to date from circa-1971-72, was deteriorated (see below). The filmstrip was scanned and color restoration...
Grade Level
K
1
2
3
4
5
6
7
8
9
10
11
12
Presentations
Teaching Media