Media Group (MGR) offers many excellent 16 mm films for loan and many videotapes for duplication. Several appropriate titles are listed in this bibliography as well as in Media Group's Catalogue.
Please refer to Science: An Information Bulletin for the Elementary Level-Key Resources for further suggestions for suitable free materials.
Also, the following free or inexpensive resources are listed in the title index of this publication:
CN Grains Kit (Print-Non-Fiction Kit)
Project Wild (Print-Non-Fiction)
SEEDS: Energy Literacy Series (1-6) (Filmstrip Kit)
A Sense of Wonder (Videotape)
The Story of Drinking Water (Print-Non-Fiction)
What Can We Do for our Environment: Hundreds of Things to Do Now (Print-Non-Fiction)