In this activity, teams of students use a map to find their way around a stream ecosystem.  They investigate all the components of the system that support fish health or are supported by the fish in the stream.  By the end of the hour, students have found ten "treasure chests" containing different-colored beads to make a bracelet.  The colors in the bracelet will remind them of all the things they learned during their scavenger hunt, as each bead represents a part of the ecosystem.
The main lesson plan overview is in this single document.

You can find supporting all materials provided here.

This lesson plan is shared with TIC courtesy of Bill Malatinsky of Seattle Public Utilities.