Updated 3/9/10: The document he gave all the kids is here: gyotaku.

Gyotaku fish impressions : the art of fish printing by Doug Olander ; photographs of art by Adam Nehr and Doug Olander. This book is available at the Des Moines Public Library.

There are also an out of print book for sale at Amazon — Gyotaku: The Art and Technique of the Japanese Fish Print

The Art Store (website here) in Windsor Heights/Des Moines has printmaking supplies.

If you don’t have real fish, you can use replicas.

Gyotaku Fish Printing Replicas – Flounder

Gyotaku Fish Printing Replicas – Star Fish

Or a 9-piece set is available: Gyotaku Fish Printing Replicas – 9-Piece Fish Set

We’ve also found a DVD: Art In The Classroom Series: Gyotaku

A nature print book that is kid-friendly: Nature Printing: 30 Projects for Creating Beautiful Prints, Wearables, and Home Furnishings