Each group needs:

• 1 bar magnet (rectangular)
• 1 sheet of paper
• 1 3/16-in iron nail (3-in long)
• 2 meters of 28 to 32 gauge copper magnet wire (bulkwire.com)
• 100 g of iron filings
• 1 battery (AA, AAA or 9V)
• 1 pair of wire strippers
• Fields Lines Worksheet one per student