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Lesson ID: 12687
Can you draw without touching your pencil? Discover the power of magnets and learn how invisible forces can move metal and make magic drawings come to life!
The Magic of Magnets
It’s like magic—but it’s really magnetism! Magnets have an invisible force that can pull certain metals, such as iron, nickel, and cobalt, toward them.
That pull is called a magnetic force, and it can go right through things like paper, plastic, or cardboard!
Magnets can push or pull depending on how they’re turned.
When the ends (called poles) are different—north and south—they pull together. When the poles are the same, they push away from each other.
You can feel that invisible “force field” when you try to push two magnets together the wrong way!
Draw Without Touching!
Some toys use magnetism in clever ways.
When you move the magnetic pen on the front, little iron pieces inside the board jump up to the surface, making lines and shapes.
The magnet is pulling those iron pieces right through the plastic!
That’s how Dr. Z’s experiment works, too.
In the video, you’ll see how you can make your own magnetic doodle board.
The magnet attracts tiny iron pieces (called iron filings) inside a sealed plastic bag, and you can move them around from the outside—no mess, no touching! Just pure magnetic fun.
How to Make Your Own Magnetic Doodle Board
Follow along with Dr. Z’s directions and make one of your own!
You’ll need:
a piece of cardboard
a clear plastic bag (like a sandwich bag)
iron filings or something similar from a science kit
tape
a magnet
Steps:
Draw a fun face or shape on your cardboard—be creative!
Cut a piece of plastic bag big enough to cover your drawing.
Tape the bag around the edges, but leave one side open.
Carefully pour some iron filings into the open side.
Tape it closed tight so nothing spills.
Use your magnet to move the iron filings across your drawing—make hair, mustaches, or silly designs!
The magnet’s invisible force pulls the iron through the plastic, just like the real Magna Doodle toy.
Magnets in the Real World
Magnets aren’t just for fun—they help make many things work!
Refrigerator magnets hold up your artwork.
Compass needles point north using the earth’s magnetic field.
Headphones and speakers use magnets to turn electricity into sound.
Credit cards and money scanners use magnetic ink to keep information safe.
Every time something moves, clicks, or sticks because of magnetism, that’s science in action!
Big Idea Recap
Magnets have an invisible force that can pull certain materials—especially iron—and can even work through solid surfaces. That’s how you can “draw” with a magnet!
You just learned how science turns something invisible into something you can see.
Ready to Try It?
Now that you know how magnetism can move things without touching them, it’s your turn to get hands-on.
In the Got It? section, you’ll experiment, test, and play with magnetic forces—just like a real scientist!
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