And you thought normal, straightforward, rational numbers were hard enough. Then surds came along – nasty, recurring decimals; square and cube roots, and goodness knows what else. It’s understandable that you’d be feeling a little unsure of what to do now. But really, surds are all about knowing how to manipulate them – a few handy tricks I’m going to show you here. Ready? Then let’s begin…

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Circle
So, what is circular motion? Well: it’s when something moves… in a circle. So, now we’ve covered that, let’s all go back to Facebook and Twitter. Going now! Bye! Oh, wait? You need to know more than that? Like what causes it? Where it’s used in real life? What happens when it all goes wrong?

Well: in that case, you might as well get comfortable…

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Dr John Snow

In this new series of posts, we’ll be looking at famous (and important) figures throughout history. These could range from a physician to a colonel, who knows? We’ll cover all the important facts that you need to know about their life, what they did, why they were important, and ultimately, the bigger picture of it all.

So, who better to start with than Doctor John Snow?

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Facebook and Twitter Logos

Did you know we we’re on Facebook? Probably.
But did you know that we’re on Twitter too?

We post to both our Facebook page and Twitter feeds regularly. And despite the fact that our figures show we now have over 300 readers per month, nobody keeps up to date! Shocking, huh?

By following us on Twitter, you’re always up-to-date on our latest posts, so you can just read the articles that interest you. In addition to that, we’ll be hosting general revision chat, tips, help, so on and so forth – by following us, it means you can tweet us directly too, for help, or a suggestion for the blog!

There are similar benefits to liking us on Facebook – you can stay up to date, you need-only read articles that are interesting to you, you can post to our Facebook wall, take part in discussions and polls, or message us for some help.

So… Why are you still here? Take a 5 minute break, go and follow or like us, then come back!

P.S: Look out for some new articles in the coming days…

Trial and Error

So, what is trial and improvement?

Well, it’s definitely not trial and error… It’s trial and error’s mathematical cousin, trial and improvement. In all seriousness though, the exam boards are very picky with this kind of thing, and it’s “trial and improvement” – Think positive!

So? What is trial and improvement? Put simply, it’s mostly common sense… You’ll get given a question something like this:

Prove that x3 – 6x + 1 = 0 has a solution between two and three. correct to one decimal place.

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