Watching TED Talks is a popular pastime at CN&CO. We visit TED.com regularly to clear our heads, have a laugh or get inspired. TED Talks open our minds, spark new ways of thinking and can lead to some very interesting conversations. Each week we pick a favourite and publish it on a Tuesday because we like how “TED Talk Tuesday” sounds. This week’s talk was by our resident Leb, Kurt Solomon.

Seeing as it is the festive season, I decided to post a different type of TED talk and found a riddle in the TED-Ed section, for those that didn’t know, TED-Ed Original lessons feature the words and ideas of educators brought to life by professional animators.

The riddle goes like this: The family of giants you work for is throwing a fancy dinner party, but there’s a problem — the elder giant’s favourite shirt is wrinkled! To fix it, you’ll need to power up the giant iron. It needs two batteries to work, but the baby giant mixed the working battery pile with the dead pile. Can you test the batteries so that you get a working pair in seven tries or less?

This TED-ed is by educator, Alex Gendler, Alex has authored and edited multiple TED-Ed lessons, some which have been included in Time Magazine and the Washington Post, to name a few.

We can’t let our brains do too much “relaxing” these holidays, so check out the rest of the TED-Ed lessons.