If you don't know Scratchfoam - it works like lino printing but you don't need all of the really sharp tools. The children can make a imprint on the foam with a pencil or anything else with a point. Teacher Tom very nicely provided a Amazon link but as Amazon doesn't ship those kind of things to Australia (however you can use a site like hop shop go ) I found a Australian supplier Cavalier Art Supplies - who are wonderful and very affordable.... www.cavalierart.com.au
I also purchased some small rollers (about 2inch wide) and a nice paint palette (just from my local art supply shops).
I gave the children red, yellow, blue and black. I learnt quickly to allocate a roller to each colour and I gave the children a cloth to clean there scratchfoam between each print. Each child was given a small rectangle of foam.....
Any way it worked out lovely...... I love the way this child even has the print the same way up in every tile