[Pri6 / Sec2 Maths: Circles] Hey, here's a brainteaser for you: A prey is floating in the middle of a circular lake. A predator is prowling around the bank. The predator can run four times faster than the prey can swim, and the predator, hungry as it is, will always position itself in the best possible spot on the side of the lake to catch the (insert prey here). The prey can only escape safely from dry land. So, is there a way for the prey to reach the side of the lake, and

[P4 Maths Angles - S4 Maths Geometry & Trigonometry] An odd number of cogs spells trouble for motivational posters like the one featured here. When the students turn clockwise, the teachers turn counter-clockwise to match the movement and everything works perfectly... ... except when parents mesh with both teachers and students, causing the entire system to mesh together and lock each other up. It's funny how misshapen, yet ironically accurate that is for most educational sys