Magnet-based experiments are a great choice for science fair projects because they are visual, hands-on, and easy to scale by grade level.

This roundup of magnetic ideas for science fair projects includes five experiments that build scientific thinking. Each project includes a clear goal, simple materials, and guidance on which grade levels it fits best. Remember, neodymium magnets are extremely strong, and supervision is required when children handle them.

1. What Sticks to a Magnet?

Recommended Grades: K–2

What This Project Teaches

This classic experiment introduces magnetism by helping young students identify which materials are magnetic and which are not.

Materials

  • Neodymium magnet (our coated cylinder magnets or small bar magnets are a great choice because they are easy to handle and have a pull force appropriate for this experiment)

  • Paper clips

  • Coins

  • Plastic items

  • Aluminum foil

  • Small household objects

Steps

  1. Gather a variety of small objects made from different materials.

  2. Predict which items will stick to the magnet.

  3. Test each item and record the results.

  4. Sort objects into “magnetic” and “not magnetic” groups.

Science Concept

Magnets attract certain metals, mainly iron and steel. Not all metals are magnetic.

For more information on this topic, visit our blog Why Are Certain Materials Magnetic?

 

2. How Distance Affects Magnetic Strength

Recommended Grades: 3–5

What This Project Teaches

Students learn that magnet strength varies with distance and surface contact.

Materials

Steps

  1. Place the magnet flat on a table.

  2. Stack paper between the magnet and a paper clip.

  3. Count how many sheets the magnet can pull through.

  4. Record results and repeat using different magnet sizes if available.

Science Concept

Magnets create an invisible area around them called a magnetic field. The strength of that field is strongest right at the surface of the magnet and gets weaker the farther away you go.

When students place paper or other material between the magnet and a metal object, they are increasing the distance, also known as the air gap, between the magnet and the object. As the gap increases, the magnetic force becomes weaker and eventually can no longer pull the object.

In summary, magnetic force weakens as distance increases. Air gaps and materials affect performance.

For more information on this topic, visit our blog Magnetic Force vs. Magnetic Field

 

3. Build a Simple Compass

Recommended Grades: 4–6

What This Project Teaches

This project connects magnetism to Earth science and navigation.

Materials

Steps

  1. Magnetize the needle by stroking it with the magnet in one direction several times. Always move the magnet in the same direction and do not rub back and forth.

  2. Push the needle horizontally through the cork or foam so it passes across the width or diameter, not through the thickness. The needle should sit balanced and level, with equal lengths extending from both sides.

  3. Carefully place the cork or foam in a bowl of water so it floats freely without touching the sides.

  4. Observe how the needle slowly turns and aligns itself in a consistent direction.

  5. Use a compass or map to identify which end of the needle is pointing north and label the north and south directions.

Science Concept

Magnets naturally align with Earth’s magnetic field.

 

For more information on this topic, visit our blogs:

How to Make Your Own Compass 

A Closer Look at Magnetic Poles

Navigating the History of the Compass 

How a Compass Works

What are Magnetic Poles & How to Identify Them

 

4. Magnetic Levitation with Pyrolytic Graphite

Recommended Grades: 6–8

What This Project Teaches

Students explore diamagnetism, a lesser-known magnetic behavior.

Materials

Steps

  1. Arrange magnets in a square with alternating poles.

  2. Place the graphite carefully in the center.

  3. Observe how it floats above the magnets.

  4. Explain how repelling magnetic fields create levitation.

Science Concept

Some materials repel magnetic fields rather than attract them.

 

For more information on this topic, visit our blogs:

Floating Magnet Experiment

 

DIY Diamagnetism Experiment

 

5. Build a Simple Electric Motor

Recommended Grades: 7–10

What This Project Teaches

This classic DIY motor experiment helps students understand how electricity and magnetism work together to create motion. It introduces foundational concepts behind electric motors used in fans, appliances, vehicles, and industrial equipment.

This project is also a great bridge between classroom science and real-world engineering applications.

Materials

Steps

  1. Shape the copper wire into a coil with two straight ends.

  2. Strip insulation from part of the wire ends to allow current flow.

  3. Secure the paper clips to act as supports and electrical contacts.

  4. Place the magnet beneath the wire coil.

  5. Connect the battery and observe the coil begin to spin.

Students can test how changing wire thickness, coil size, or magnet strength affects rotation speed.

Science Concept

When electric current flows through the wire, it creates a magnetic field. That field interacts with the permanent magnet, producing a force that causes motion. This interaction, known as the electromagnetic force, is the basis of electric motors.

Optional Extension for Older Students

Have students research where electric motors are used in everyday life, such as household appliances, electric vehicles, robotics, and manufacturing equipment. This helps connect the experiment to real-world technology.

For more information on this topic, visit our blogs:

Make Your Own DIY Motor

Magnets and Micromotors

The Use of Magnets in Electric Motors

Tips for Parents Helping with Science Fair Projects

Choose a project your child can explain in their own words. Judges value understanding more than complexity. Use charts, photos, and simple diagrams to make results clear. Practice explaining the project before presentation day.

Safety matters too. Strong neodymium magnets should always be handled with supervision and kept away from small children and electronics.

Why Magnets Are Ideal for Science Fair Projects

Magnet-based experiments are visual, repeatable, and easy to demonstrate. They help students explore physics concepts without expensive equipment. For more ideas, visit the Apex Magnets Experiments section of our blog.

At Apex Magnets, we support educators, parents, and students with reliable magnets, fast shipping from our U.S.-based warehouse, and expert guidance to help projects succeed. If you have any questions, contact our team!

 

Safety Warning: Children should not be allowed to play with neodymium magnets as they can be dangerous. Small magnets pose a choking hazard and should never be swallowed or inserted into any part of the body.

Magnets can be dangerous. Neodymium magnets, especially, must be handled with care to avoid personal injury and damage to the magnets. Fingers and other body parts can get severely pinched between two attracting magnets. Bones can be broken by larger magnets. Visit our Magnet Safety page to learn more.