Making a Compass: 3 Fun Examples for Kids

Making a Compass with a Needle and a Cork

Creating a compass is a fantastic way to introduce kids to basic navigation concepts and the principles of magnetism. Using simple materials like a needle and cork, you can make a functional compass right at home or in the classroom. Here are three diverse and practical examples to guide you through the process.

Example 1: The Floating Compass

Context

This example is ideal for a calm day by the water or even in a large bowl at home. It allows kids to see how the compass behaves on the water, teaching them about buoyancy as well as magnetism.

To make this compass, you’ll need a bowl of water, a cork, a needle, and a magnet.

First, magnetize the needle by stroking it with the magnet in one direction about 30-40 times. This aligns the needle’s magnetic domains. Next, push the needle through the center of the cork, ensuring it can rotate freely. Carefully place the cork onto the surface of the water. Observe how the needle aligns itself with the Earth’s magnetic field, pointing towards magnetic north.

Notes

• For a fun twist, try this experiment with different sizes of corks to see if it affects how well the compass floats.
• You can also use food coloring in the water to make it visually appealing!

Example 2: The Simple Handheld Compass

Context

This example is perfect for outdoor adventures, such as hiking or camping. It teaches kids how to create a portable compass they can use for navigation.

Start by magnetizing a needle as described in the previous example. Then, take a small piece of cork (about the size of a quarter) and push the needle through the middle. Next, use a piece of string to tie the cork to a small, lightweight stick. Hold the stick upright, and watch as the needle aligns itself with the Earth’s magnetic field!

Notes

• Encourage kids to mark their compass with a permanent marker to highlight north, south, east, and west.
• This compass can also be used in conjunction with a map to teach kids basic map-reading skills during your outdoor excursions.

Example 3: The Magnetic Compass in a Bottle

Context

This example suits indoor settings and helps kids learn about the principles of compasses while creating a beautiful science display.

Using a clear, plastic bottle or jar, start by magnetizing the needle as you did previously. Then, insert the cork with the needle into the bottle. Fill the bottle with water, ensuring the cork floats and the needle remains submerged. Seal the bottle with a lid, and you now have a magnetic compass that can be viewed from all angles!

Notes

• Kids can decorate the bottle with stickers or paint to personalize their compass.
• Discuss with them how compasses were used historically for exploration and how they are still relevant today in technology, like GPS.

These engaging examples of making a compass with a needle and a cork not only provide hands-on learning but also spark curiosity and creativity in kids. Enjoy exploring the world of navigation together!