Purpose: To teach students the properties of electromagnets. The students will see how a coil can create an magnetic field and how a magnet can induce a current in a coil. Components: battery two compasses one small coil one large hollow coil two LEDs ( one red, one green )

Fourth Grade CA Physical Science Standards met:

• PHYSICAL SCIENCE 1c - Students know electric currents produce magnetic fields and know how to build a simple electromagnet.
• PHYSICAL SCIENCE 1d - Students know the role of electromagnets in the construction of electric motors, electric generators, and simple devices, such as doorbells and earphones.
• PHYSICAL SCIENCE 1f - Students know that magnets have two poles (north and south) and that like poles repel each other while unlike poles attract each other.
  

• PHYSICS 5f - Students know magnetic materials and electric circuits (moving electric charges) are sources of magnetic fields and are subject to forces arising from the magnetic fields of other sources.
• PHYSICS 5g - Students know how to determine the direction of a magnetic field produced by a current flowing in a straight wire or in a coil.
• PHYSICS 5h - Students know changing magnetic fields produce electric fields, thereby inducing currents in nearby conductors.