I am still planning on having a science demonstration day for the elementary the last week of school. You will be working individually to demonstrate a science concept to younger students. Your experiment needs to be repeatable, you will conduct it 10-15 times a session for 6 sessions. So you need to follow these guidelines.
1) It must be safe. No toxic chemicals or dangerous dangerous demonstrations.
2) Must have a quick presentation, each experiment needs to be show and discussed in 2 to 5 min.
3) Has to be inexpensive, you may be conducting this experiment 60 times, so materials can not be expensive to purchase.
4) You need to be able to explain what is occurring.
5) I need to approve all demonstrations.
Find 2 or 3 demonstrations, and if you have the materials around your house try it out, but I am not asking you to go out and purchase these materials. I will provide the materials necessary for the demonstration show. Chances are I already have them at school.
Send me a list of the materials you need for this project.
Have fun with this and remember, the elementary students look up to you and love to listen to you.