March 14th...giornata della matematica, Pi Greco day. Perchè non utilizzare le cifre di π per costruire una spirale, la spirale di Archimede, da appendere in classe o nel corridoio? Se appesa sopra un termosifone o un'altra fonte di calore, diventa una divertente attività ed esperimento con cui scoprire alcune caratteristiche dell'aria: la spirale ruota e si muove perchè spostata dall'aria calda. L’aria calda è più leggera dell’aria fredda perché meno densa e sale verso l’alto. https://maestramonica.it/pi-greco-day-la-spirale-di-archimede-matematica/

0

0

0

327

0

0

0

0

2,506

0

0

0

0

517

Bay boats are all the rage in the fishing world these days, but unfortunately some can be a little out of reach for those living in the economic realities of middle-class America. In this first look video, boats.com senior editor Lenny Rudow has a peek at the Carolina Skiff Sea Chaser 21 LX Bay Runner, a boat designed to bust into the bay boat category, but also be more accessible to budget-minded buyers. Read more: http://features.boats.com/boat-content/2014/05/carolina-skiff-sea-chaser-21lx-bay-runner-first-look-video/ Read the full review: http://features.boats.com/boat-content/2014/05/sea-chaser-21-lx-bay-runner-get-hooked/ For more boat videos, visit http://www.boats.com/ boats.com features boat reviews, how-to videos, special features, and information about new boats, boats for sale, and boating products—usually with a dash of fun. Our reviewers test the features, performance, and specifications of each boat, searching out the hidden details for a critical evaluation. If you're shopping for a boat, we want to help you make the best choice. And if you're just looking, we'll try to make it fun too. Subscribe to receive notification of new videos.

0

0

0

18,937

0

0

0

0

637