Design a hands-on science demonstration

Replace the bracketed details or make it yours using the form.

I want to design a hands-on science demonstration. Propose age-appropriate demonstrations using safe common materials and clear observations.

Use these inputs:
Concept: [Add concept]
Age: [Add age]
Materials: [Add materials]

Create: Demonstration plan.
Separate supplied facts from assumptions. Ask only for missing information that changes the result.
Make the result specific enough to use and include a short way to check or improve it.