There will be hundreds of smaller glass circles in the final sculpture, and so I asked the children to make simple designs based on the elements (there are 118 known elements at the time of writing).
Here are a few of their element designs:
The school was doing a project on "metals" so I also ran a project with children making plaster casts of various different metal components.
The children then painted their plaster casts using a dry-brush technique with metallic paint, producing a lovely effect: