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Exploration #1, STEP 1: Testing an unmagnetized and a magnetized nail with a compass.
Exploration #1, STEP 2: Testing the magnetic strength of one nail and four nails, all aligned in the same direction.
Exploration #1, STEP 3: Switching the alignment of two of the four nails.
Exploration #1, STEP 4a: Simulation of measuring the magnetic strength of a single small magnet and four small magnets aligned in the same direction.
Exploration #1, STEP 4b: Simulation of measuring the magnetic strength four small magnets aligned in different directions.
Exploration #2, STEP 1: Simulation of a bar magnet being dragged across above a magnet on a pivot.
Exploration #2, STEP 2: Test-tube with iron filings being shaken and then tested with a compass.
Exploration #2, STEP 3: Test-tube with iron filings being rubbed with a bar magnet.
Exploration #2, STEP 4: Rubbed test-tube being tested with a compass.
Exploration #2, STEP 5: Rubbed test-tube shaken and tested again.
Exploration #2, STEP 6: Magnetized nail being hit with a hammer and then tested with a compass.
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