Skip to main content
Podcasts & Activities
for Curious Kids & Their Grown-Ups

Tinkerclass (Week 2 Day 4): Improve & Retest

It's day 4 of TINKERCLASS–the improve and retest phase. See what you need to improve your speed! Then, test it again, and again and again and share your results with us! This week's project features the Wow in the World episode, Rat Race!

Want to join TinkerClass for a weeklong project that will get you thinking and tinkering like the scientists in this episode, visit to learn more!