Students learned about what a collograph print is, what a composition is and various printmakers. We watched some videos online on how to make a collograph plate (http://www.youtube.com/watch?v=SaSKKg-igNU&safe=active) and I showed them my own process (see images at bottom). We used black printing inks and brayers, but you could use a sponge and tempera paint - you just wouldn't get as nice of detail.
Look for feathers, buttons, foam cut outs, string, burlap and more! Look how amazing they turned out!!
I used these 5 images below in my own powerpoint to show kids how I made one...you can use them too! Helps break down the process (but so does the video I posted above)