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"Free Technology for Teachers" - 2 new articles

Five Features of Canva Presentations You Might be Overlooking
How Tall Can a LEGO Tower Get? - Life's Biggest Questions
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Five Features of Canva Presentations You Might be Overlooking

Canva has become my go-to presentation design tool over the last few years. Even when I know that I'm going to end up giving my live presentations from PowerPoint or Google Slides, I still use Canva to design the presentation. In the last year Canva has added features that make it a serious rival to PowerPoint and Google Slides. In this short video I highlight my favorite "hidden" features of Canva that you might be overlooking.

The features shown in the video are:

Polling an audience
Creating MP4 files
Publishing slides as a website
Collaborating on designs
Recording narrated presentations

Many more features of Canva are highlighted in this playlist of Canva tutorials. Some of the features in that playlist include creating timelines, design certificates, making greeting cards, and publishing comic strips.

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How Tall Can a LEGO Tower Get? - Life's Biggest Questions

While getting caught up on my reading in Feedly this morning I came across a new comic from The Oatmeal. The comic addresses the question, "how tall can a LEGO tower get?" (It's a copyright-protected work so you'll have to view it on The Oatmeal website). The comic is based on a 2012 BBC article titled How Tall Can a LEGO Tower Get? The comic and the article prompted me to turn to YouTube for videos about building giant LEGO towers. YouTube did not disappoint me in my search for videos that explain the math and physics highlighted in the BBC's article and The Oatmeal's comic.

Last fall a YouTube channel titled Life's Biggest Questions tackled the question of "how tall can a LEGO tower get?" The video explains the math that was used by researchers at The Open University to figure how tall a LEGO tower would get before the blocks collapsed under their own weight. Of course, the mathematical answer assumes that the tower wouldn't topple over before reaching it's maximum height. So you then have to consider the overall stability of the structure instead of just weight-bearing capability of the structure. Watch the video to learn more, it's quite enjoyable.

Applications for Education
The question of "how tall can a LEGO tower get?" is a fun prompt for diving into discussions about math and physics. Before showing students the video or the article mentioned above, I'd have them make guesses as to the answer then write out lists of the variables that they can think of that would influence how tall the tower could get. Then after they watch the video I'd have a little classroom contest to see who can build the tallest tower with the LEGOs available in my classroom.

This post originally appeared on FreeTech4Teachers.com. If you see it elsewhere, it has been used without permission. Sites that steal my (Richard Byrne's) work include CloudComputin and WayBetterSite. Featured image captured by Richard Byrne.

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