These gorgeous geodes use a mix of mediums: coloured paper, liquid watercolours, glitter, markers and paint sticks. This lesson was adapted from an activity on the Artful Parent website.
We watched a couple of videos about geodes: Types of Geodes & Where to Find Them and
What’s Inside These Rocks? – #sciencegoals for an understanding of how they are formed and discussed the natural shapes and colours, etc. Our artwork used the elements of shape, line, colour and value in an abstract representation of a geode.
Students began by choosing two pieces of coloured card in a light and dark tone of one colour. A shape was torn (best option to get a realistic organic shape) or cut from the darker tone which was then glued onto the lighter tone and torn or cut around. This was glued onto a large piece of white paper (we used A3 cartridge).
Using the lighter tone of the colour (for example, light blue) students drew concentric lines around the card shape, following the contours, repeating three times. The darker shade ( dark green for example) was then traced once around.
Next, watercolours (cake palettes or liquid) were painted around the marker lines, light and dark of the colour (watercolours can be watered down for lighter tone).
For the “glitter ring” I demonstrated to the students how to ‘draw’ with the nozzle of the PVA glue bottle and only squeeze very gently as they move it around while keeping it in contact with the paper whilst ‘drawing’ the ring of glue. They smeared it with on finger and then sprinkled on the colour glitter to match (or metallic gold or silver)
After that, some more thin marker lines were drawn and finally using paint sticks- two rings of the lighter tone using the edge to get a thinner line and the last dark line drawn thickly.
The geode shape was cut out and glued onto brown craft paper (we used packing paper) and cut around with around a 1cm border to represent to outer rock that the beautiful geodes are hidden in.
The geodes make a lovely display with all the different sizes and colour combinations!