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Casio FX-991ESPLUS Scientific Calculator
Casio FX-991ESPLUS Scientific Calculator
Offered by Europe_Wholesale
Price: £15.97

5.0 out of 5 stars Perfect GCSE & A-Level Calculator, 30 April 2012
Verified Purchase(What is this?)
Prior to this calculator, I used a Casio FX 991 ES (an old model). After losing it, I decided to upgrade to the ES-Plus. I was pleased to have upgraded -- the ES-Plus is a fully featured calculator yet the features are not too intrusive to hinder every day, 'casual' operations (such as simple addition).

When wanting to do something a little more complex (e.g. complex numbers, vector products, matrices etc.), a simple shift into a different mode and the calculator becomes even more powerful. A particular feature which is useful for the GCSE mathematician is the equation solving function (which can be used to check an answer after working it out by hand) -- this can be used to solve linear, quadratic and cubic equations. For AS and A2 mathematicians, the statistic functions (such as regression) are useful -- regression calculations can take a lot of working, so it's satisfying to be able to check that you're right using a calculator function! Complex/Imaginary modes and vector modes are particularly helpful in Further Pure modules. Another feature which I found useful is the 'table' function -- this allows you to calculate a series of values for a certain function in a certain range. I have used this many times in Further Pure 2 when having to draw polar graphs!

Arguably, the build quality isn't superb, but you have to remember that this is one of the cheapest calculators you can buy: and for how powerful it is, it is certainly worth it.


How to Teach Quantum Physics to Your Dog
How to Teach Quantum Physics to Your Dog
by Chad Orzel
Edition: Paperback
Price: £8.99

166 of 168 people found the following review helpful
5.0 out of 5 stars Funny, yet brilliantly informative, 21 April 2011
Verified Purchase(What is this?)
I'm currently studying Physics for A-Level and the course covers a bit of simple quantum mechanics. Of course, quantum mechanics is something which fascinates almost everyone, and so I looked around for some books about the subject and came across this from a recommendation from my teacher. Admittedly, before reading the book I thought it would either be overly complicated (which many books on this subject are) or patronising and simple but to my surprise, from cover to cover the book kept me hooked -- it not only covers things that I've learned in class but new topics too, such as quantum tunnelling. Harder topics are introduced slowly and in a funny manner: usually with an intro from an encounter with the author's dog! Jokes are well placed and not too much, they allow the reader to have a good laugh yet still learn about the wonders of the quantum world. Well worth reading for anyone wanting to find out more!


Without Why
Without Why

3 of 3 people found the following review helpful
5.0 out of 5 stars A great album, 21 April 2011
Verified Purchase(What is this?)
This review is from: Without Why (MP3 Download)
I first discovered Rose while listening to tracks from Mark Ronson's recent album "Record Collection" where Rose supplies backing vocals for a number of songs. After researching her, I found that she had released this solo album "Without Why" -- after listening through once, I was hooked. There's a wide range of songs, from classic rock types to more modern synth versions ("Start/Stop/Synchro" springs to mind here). Her voice is excellent and reminds me of a young Morrissey -- particular favourites of mine on the album are "Start/Stop/Synchro", "Carry On" & "Come Away With Me". Overall, a brilliant debut.


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