Students were learning about natural geological events. At about same time I came across this amazing project on Small hands big art, website, that must be helpful and inspiring to anyone working in our field.
Observing the geodes we studied their shape, structure, colour, crystals. At first we paid attention to the shape, we drew the crystals and the structures, then came painting and then the decoration of the middle gap using the weaving technique.
I think it went brilliant and kids really loved it.