🚡 Cup Zipline

🔊Let's build a zipline across the room for a tiny, brave rider!

⏱️ 30 minutes💲 about $3●○○Grades 2nd–8th🦾 Machines

• 👶 Small parts! Keep them away from little brothers and sisters.

Gather first

• String or yarn · a long piece, across the room
• Straws · 1
• Paper cups · 1
• Paper · 1 strip
• A small toy figure, or a pom-pom · 1, to ride
• Two chairs
• ✂️ Kid scissors
• 🩹 Tape

The big idea: Gravity pulls the rider down the slope, and a steeper slope is a faster ride.