Place small nails on either side of the slice of wood to create a loom. I used wire for the warp, I found it to be helpful to wrap around each nail head.
On this example I'm using yarn. I tied it to the end of the wire and started weaving. I think this would be difficult on this small scale for young artists.
I tied off the end of the weaving onto the nail or wire.
Another finished example of this is one a little more random with ribbons, yarn, beads and fabric. I like both of them for different reasons.
Each of these works of art had a heart painted on them so I simply used that for a signature to the piece. The image above is the back.
I'm always looking at ways to use what I already have. It's in all of us art teachers I think.