Hands-on Activity in Energy Efficiency/Conservation for a 'Teach-the-Teachers' Workshop

Hello all, I am currently creating a 4 hour session for a Teach the Teachers workshop in Energy Efficiency/Conservation --- new learnings they can take back to their schools to present to other teachers for classroom sessions. During the 4 hours I need a hands-on activity lasting about 45 minutes. I was thinking of using EZ Watt Meters and testing various small appliances, but that is dependent on the teachers being able to actually purchase Watt Meters for the classroom---so that might not be appropriate. Another challenge: the teachers are from all grade levels and disciplines, i.e., a fourth grade science teachers as well as 12th grade AP physics can be working side-by-side. Also, wind and solar are already incorporated in other sessions. This session is for efficiency/conservation only but can include residential home or green schools conservation. Any ideas would be greatly appreciated.

Thanks in advance.

Marcia Lehman
Essential Energy
Pittsburgh, PA area
[email protected]