[S2 Maths and above - Probability] A wonderful Christmas to you! And have I a wonderful video to share with you. It's 80% accurate, yes, but it can also be 20% inaccurate. We like to think that we will get four out of five targets if we perform five tries on five targets, but the truth couldn't be further than that. Each individual attempt is its own 80%; and it's entirely possible for the 20% chances to be stacked up on each other, where you land on zero of the five targets

[S1 Science - Matter] You've probably used the toilet at home a lot of times. And, for the more curious, maybe you've looked inside at whatever mechanisms were within, wondering how they actually worked. The Pythagorean siphon (also known as the Cup of Tantalus) shown in this video is used everywhere. Your washing machine, for one. Your toilet, for another. It's sometimes used in novelty trinkets, like an oil-based hourglass, if you're lucky. Ever wanted to get your hands on

[S3/4 Biology - The Eye] Kept you waiting, huh? Haha. Have you ever twisted your fingers when you were younger while playing tag / catching with friends or cousins or other classmates in general? Yes? No? Well, did you know that you can TWIST YOUR EYE!? I didn't believe it at first neither, but it makes sense. Deer, elks, moose, pigeons, mice and other prey animals do require that sort of eye rotation in order to move through the forest without feeling dizzy. It's incredible