If you wish to do this activity in the classroom, print the pages from the online version and use them as handouts.
Connect the wire, light bulb, and base as shown in the exploration. (In lieu of the light bulb and base, you can cut up a string of holiday mini-lights and connect them to the battery, but be sure to discard the remaining lights when done for safety reasons.)
Have each student bring in at least one object they think is a conductor and one they think is an insulator. Students are likely to know that metals are good conductors, but they may be unaware that things with a lot of liquid in them also conduct. Some things to have on hand include lemons, pickles, and potatoes. (When testing these, make sure students stick wires into the wet part of the item.) An Altoids box is an interesting object: the painted outside is an insulator, but the metallic inside is a conductor!