[S3 and up: Social Studies] Hey, so. Here's something to tickle your mind a bit. This 'class' they stress as the main divider doesn't seem easy to define, so let me break it down for you: Class, in this case social class, indicates one's capacity in the society, how the society and its systems tend to reward its people and how they engage with the facilities in society. Class can be defined in a couple of ways: 1) the educational level of the individual, 2) the income earned

[S3 Physics and Up: Surface Tension] I really don't have to explain much of this. Video speaks for itself. It's probable that the chemical composition of the dyes themselves could have influenced the way the ink diffuses, since surface tension applies not only to water but every fluid medium with enough cohesion. Some could have been made with metal ions that are electrically charged by the kinetic reactions, which helped to keep the ink cohesive enough to stay together on th