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/

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Canal boat hire like you've never experienced before. With 15 starting locations across the waterway network and canal boat sizes to accommodate 2 to 12 people, you and your family or friends can afford to kick back and relax as you enjoy watching Britain's most stunning countryside drift by.

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We were scuba diving in French Polynesia when we were approached by a tiger shark! it was pretty scare as the shark was huge, but our dive master was even able to hand feed the shark! This channel is funded by viewers like you. Please help us keep this channel creating great content by becoming a patron Join this channel to get access to perks: https://www.youtube.com/channel/UCkDwexrF43p_1QurfKFBCBA/join http://www.patreon.com/sailingdoodles Donate Via Paypal to help http://www.paypal.me/sailingdoodles

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Bad back getting better, but this week i've been taking it easy by trying to get my RYA "day skipper" theory started.

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