Hello PF, I am a middle school teacher in Humboldt county, CA and teach physical science to eighth graders. We are beginning our electricity and magnetism unit and have students have experimented with making a light bulb illuminate using a battery and copper wire. My question is, if we make a more permanent set-up with the wire attached to the battery and light bulb with electrical tape, would it be safe to keep our battery somewhere in the classroom? My concern is that the materials would become too hot and I need to create a safe place where students can observe the battery still powering the light bulb so their safety is not compromised. Are there any suggestions or previous set-ups that were successful? Thanks!