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Grant Wood Area Education Agency

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Magnets and Motors

Lesson 6: Using a Compass: Which Way is Which?

Lesson Summary

In this lesson, students experiment with the compasses they built in Lesson 5.  They determine which poles of the magnets point north, explore the geographic usefulness of a compass, and make and test predictions of magnetic behavior.  The students then use what they have learned about attraction and repulsion to make the compass spin like a motor.  This activity is repeated in Lesson 12 using an electromagnet coil.

Teacher Background

Because the compasses that the students built have two magnets, they also have two north and two south poles.  This fact does not interfere with the operation of the compasses, but it may provoke some interesting questions and observations from students as they experiment with them. 

Set-up/Management Tips

  1. Prepare materials for distribution.
  2. If a compass does not point north and south, this probably is because a magnetic object is nearby or because one of the compass magnets was installed incorrectly. 
  3. Label the walls in your classroom (North, South, East, and West).
  4. Keep compass for Lesson 12, if classroom space allows.

Literacy Support

Students can reflect on this lesson in their science notebooks.  Students read two pages in their Student Activity book about how animals use magnetism.

Scientific Vocabulary
The following words are key vocabulary words that will be introduced in this lesson and reinforced throughout the unit:

No new vocabulary introduced this lesson.