In our materials engineering work, students have been busy examining granite, foam, wax, limestone, pumice, alabaster, and marble to determine how each is formed, its hardness, durability, and weight. Students are looking at these objects to determine which one best fits the following criteria necessary to reproduce the petroglyph.
- It needs to be as similar to the original artifact as possible.
- It needs to be made from a material that you can carve into.
- The carved lines must be durable.
- It must not cost too much to ship.
Ask your 4th grader about this work and to tell you which material they think will be the best to use.
