Invisible Wire Challenge
This Spark challenges families to explore the incredible thinness of wires inside modern computer chips. Children will compare a human hair to increasingly smaller scales, imagining pathways for electricity in everyday objects.
The lesson goal is children will learn to compare incredibly tiny sizes by using a human hair as a reference point. They will discover what a nanometer is and understand just how small the wires are inside computer chips, appreciating the amazing engineering behind modern technology.
What You Need
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Learning Guide
Step-by-step guidance. No preparation required.
- 1
Breakfast Table Connects5 Min
- Point to an appliance and ask: 'How does this get its power?'
- Move on when Child guesses or describes how electricity might travel through wires to an appliance.
Photo by Andrey Matveev on Pexels - 2
Explore & Plan Our Paths8 Min
- Gather foil, paper, scissors, pencil. Ask: 'How can we make a path thinner than a hair?'
- Retrieve a single human hair for later comparison.
- Move on when Child proposes a method to create a thin path and has the materials ready.
Photo by Fabien Burgue on Pexels - 3
The Super-Small Scale6 Min
- Ask: 'What's the thinnest path you can imagine?'
- Explain what a nanometer is and its scale compared to a hair and computer wires.
- Move on when Child understands that a nanometer measures extremely small things and can state that computer wires are much thinner than a human hair.
Photo by Maksim Goncharenok on Pexels - 4
Crafting Micro-Paths9 Min
- Cut the thinnest foil strips or draw the thinnest pencil lines.
- Place a human hair next to your thinnest path.
- Compare and discuss how much thicker your path is.
- Move on when Child has created a very thin path and compared it to a human hair, expressing amazement at the difference.
Photo by Tima Miroshnichenko on Pexels - 5
Tiny Worlds, Big Ideas2 Min
- Ask: 'What surprised you most about tiny wires?'
- Move on when Child shares one key takeaway about the thinness of computer wires or the concept of nanometers.
Photo by Andrey Matveev on Pexels
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