What this lesson teaches
This activity demonstrates the principles of electromagnetism and motion. Children will learn how electric current can create magnetic fields that propel objects, connecting electricity to motion in a tangible way.
Science in Action
Can you finish electro-magnetic pencil racer in about 30 min?
Electro-Magnetic Pencil Racer
You will this activity demonstrates the principles of electromagnetism and motion.
Duration30 min
Age GroupAges 15–16
DifficultyAdvanced
SubjectScience
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How the activity runs
The learning connection
By building their own pencil racer, students engage in active experimentation, applying concepts of electricity and magnetism through hands-on creation. This aligns with Bruner's CPA approach, where concrete materials lead to better understanding of abstract scientific principles.
Try it with your learner
1. Gather a pencil, a small battery (1.5V), copper wire, and a small magnet. 2. Wrap one end of the copper wire around the pencil's middle section to create a coil. 3. Connect the other end of the wire to the battery terminals using tape. 4. Attach the magnet to the eraser end of the pencil. 5. Place the pencil on a flat surface and observe its movement when connected to the battery. 6. Experiment with different wire lengths — how does it affect the speed?