(P5/6 Science: Adaptations - Camouflage) In the natural habitat, animals evolve and adapt in certain ways to increase their chances of survival and reproduction. One of the most common such methods is camouflage, which is the ability to blend in with the surroundings. Whether it is by way of adjusting the chromatophores underneath the skin or producing a whole new coat of outer covering to match the seasonal colours, most camouflage involve animals mimicking the look of the immediate surrounds to disguise themselves from would-be predators or sneak up on a prey, sometimes both. Some use it to convey mood, a means to communicate and reproduce for example chameleons, and yet others such as zeb

Diodes & Solar Panels [S3/S4 Physics & Chemistry: Electricity / Covalent Bonds] The greatest dilemma of modern energy generation confronts the serious problem of trying to make renewable energy substitute what limited fossil fuels we still have left on Earth. As such, it is imperative to understand circuitry and how it may be used in everyday lives. With the copious amount of rain and sun Singapore experiences, many might think of solar panels and hydro-electric alternatives for their renewable energy source of choice. After all, most school kids have participated in the construction of a toy car powered by a solar panel. But how do diodes & solar panels actually work in a circuit? Steve Mou

[S2 - A Level Mathematics: Functions & Graphs] (Long Video. If you feel like you don't understand graphs, this is worth a watch) You might be used to the Quadratic Formula if you're familiar with the Secondary School Maths curriculum. It's a very simple equation that spits out the answers you want as long as you put the coefficients in the right parts of the equation. It's also one of the first times you were given a mathematical formula featuring such complex algebraic arrangements & for most of you, realise how useful algebra is - Just find out what those numbers before your x^2 and x are, pop them in and you'll get the answer 'magically'. There is a more complex iteration known as the cub