Editing Do it Yourself Electromagnet (section)

== Demonstration ==


# Provide each student group with:
#* 4 feet of wire
#* 3 feet of electrical tape
#* A 9V battery
#* A nail
#* an oven mitt
# Let the groups know that they will have 30 minutes to create their own electromagnet, using the supplies given, and to test the strength of it. Explain that the oven mitt is because the battery will get hot when they are trying their electromagnets, so they will want to wear it while holding the battery. 
# When each group finishes preparing their magnet, they are to bring it over to your table/desk. On one side of your desk there will be a pile of paper clips, and they must try to move as many of them across the desk using only the electromagnet they made. The magnet has to lift the clips off the table/desk and keep them suspended the whole journey to the other side. If any fall off during the journey, then they do not count towards their final score. Each group can try a maximum of three times, and the try with the highest number of clips is their score.
# After all groups get their attempts in, show who won 1st, 2nd and 3rd. Ask the three groups to show what they did to make their magnets, and compare the methods to show what made these magnets the strongest.