The Tipping Marble Clock ••• A clock that tells time with marbles. The crank-slider-rack-pinion mechanisms lifts the ball to the top where it rests on a tipping time segment. Each marble increments the time by 1. When the segment fills up, the whole thing tips dumping all the marbles down to the bottom except 1. The last marble drops down to the track segment below, indicating that 10 minutes have passed. At the top of the hour, the chain reaction happens again, this time with the middle segment

This week in math: 🕰️ to the hour and half on analog and digital clocks! We love a simple activity like using WordWall.net to make fun, interactive boards where students can pick a time then make it on their mats! We also play lotssss of games to help read our clocks! #firstgradeteacher #firstgrade #iteachfirst | Susan Jones Teaching

668K views · 9.4K reactions | This giant digital clock is made of tiny analog clocks. | Insider | Facebook

26K views · 362 reactions | A kinetic artwork by Humans since 1982, where clusters of analog clocks move in choreographed harmony, forming digital-style numbers and transforming the passing of time into a quiet, mesmerizing performance. © humanssince1982.com | Enigma Elysium | Facebook