The invisible rod

Two similiar acrylic rods are placed in two different liquid. The one of the right is water, the one on the left is corn syrup. Why couldn't the submerged portion of the rod be seen in the jar on the left?

A potential CE lesson material on responsibility, integrity, RESPECT...and self-control

I didn't find this video funny but am rather apalled by the behaviour of both the girl and the raging teen..... I really do hope my students are way better than them, right?

A nice way to start the holidays....

..is to have a good DotA game with my former Sec 2s!

So my current Sec 2s, I'm waiting... :)