Giant Smoke Rings!

YOUR CHALLENGE: MAKE A MARBLE ROLLERCOASTER. Take a marble and make it to travel as far as possible - like a roller coaster! Maybe you make it go down the stairs, maybe you build a cardboard track for it, or maybe you use a PVC pipe. Be creative with what you have lying around the house! Free to watch on Dr.Doc Kids.

Courtesy of CrunchLabs on YouTube. Watch on YouTube ↗

More Dr.Doc Kids: Tech & Engineering

A Baffling Balloon Behavior - Smarter Every Day 1132014•5m•HDMaking Impossible Items Float2026•21m•HDHow I Proved the Earth is Round (with my Bike and Two Sticks)2018•13m•HDFilling My Warehouse w/10,000+ Balloons!2025•25m•HDSCIENCE CLASS #3- Why is the Sky Blue?2020•28m•HDBilliard Ball Snake!2023•20m•HDWorld Record Domino Robot (100k dominoes in 24hrs)2021•14m•HDCatapult Chain Reaction to Impress Your Friends and Family2022•26m•HDSurfing on 3,500,000 Airsoft BBs2024•14m•HDGummy Bear Flame Volcano!2023•14m•HDBuild Your Own Strobe Light Animator2022•19m•HDUltimate Nerf Gun Battle w/ Zach King!2025•25m•HD