Solve a Problem With Magnets
Aligned to 3-PS2-4 — Next Generation Science Standards.
What this lesson teaches
Because magnets can pull certain metals and stick together, you can use them to build helpful tools. A good design solves a real problem.
Worked examples
Example 1
A magnetic cabinet latch holds a door shut and keeps a curious puppy out, with no lock needed.
Example 2
A magnetic screwdriver tip holds the screw so it does not fall while you reach into a tight space.
Example 3
Magnets only pull on some metals. A magnet grabs a steel paperclip but ignores an aluminum can, which is why sorting machines use them.
Practice questions
- List one everyday problem a magnet could help solve at your home.
- Draw a simple gadget that uses a magnet to fix that problem.
- Explain what the magnet must be able to pull for your design to work.
Watch the lesson
Every lesson comes with a video taught in English and Spanish — the same video the QR code in the printed workbook opens.
▶ Watch this lessonEn español
Resuelve un problema con imanes
Como los imanes pueden jalar ciertos metales y pegarse entre sí, puedes usarlos para construir herramientas útiles. Un buen diseño resuelve un problema real.
Ejemplo 1: Un seguro magnético mantiene cerrada la puerta de un mueble y deja fuera a un cachorro curioso, sin necesidad de llave.
Ejemplo 2: La punta magnética de un desarmador sostiene el tornillo para que no se caiga mientras alcanzas un espacio estrecho.
Ejemplo 3: Los imanes solo jalan algunos metales. Un imán agarra un clip de acero pero ignora una lata de aluminio, por eso las máquinas de reciclaje los usan.
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