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Grade 5 Science · World 9: Magnet Mountain · Level 66
Why Use Each One?
Choose for a purpose, such as a scrapyard crane or a refrigerator door.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 66
- Which should you choose? Ask this: does it need to turn on and off?
- A junkyard crane lifts cars with an electromagnet. Turn the current off, and the load drops right where you want it.
- A refrigerator door stays shut with a permanent magnet. It works all the time and needs no electricity.
- You've reached the top of the mountain! Choose the magnet that fits the job.
Georgia Standards of Excellence in Science:
- S5P3.a — Construct an argument based on experimental evidence to communicate the differences in function and purpose of an electromagnet and a magnet. (Clarification statement: Function is limited to understanding temporary and permanent magnetism.)