Melody

You have set that algebraic division out really nicely Chris  

Thanks Bertie,

I think i can see that.  I shall think on it :/

Oh dear MG,

We have stubbled on a concept that you absolutely need to understand.

Length measures distance. The units might be cm, m, yards, km etc

The perimeter or the length or bredth or height of am object is a length.

You can measure theses with a ruler or with a measure tape etc

Area measures how many SQUARES fit INSIDE a shape.  

So the units might be   $$cm^2\;\; or\;\;m^2\;\;or \;\;miles^2$$

The units are square units because they are counting squares.

Work through this page and think really hard about what you are being shown.

Thanks Badinage, that is good advice.

I tackle the problem a bit differently.

Firstly

I remember relatively few formulas.  I work most out from scratch, this is slower and it requires a different type of memorizing for if I had not semi memorized the working it would take far too long.  For me it is easier to semi memorize a logical procedure than it is to memorize the end result.

Secondly

I never wrote the formula out 100s of times BUT if I had to use a formula I never allowed myself to directly copy it.  At worst I would have it on a different page, I could look at it but then I had to reproduce it without directly copying it.  If I could not do this then I would write it on a peice of paper a few times first, until I could do it.

Third.

There are lots of tricks, poems, songs, etc to help you remember specific things.

Like SohCahToa for instance.   I have added to my collection of these since i have been on the forum.  If you have specific a problem remembering something then ask on the forum.  Someone may have a great idea of something that will work for you.

Last but not least,

The more you understand - the less you have to memorize!  

Thanks Chris,  that is really neat!

I think I understand what Bertie has done as well.  I must be on a roll.    

I think I should go looking for some introductory videos on modular arithemetic.

The basic stuff is not that hard but it is not cemented in my brain very well yet.  

Anyway I will store this thread in our "reference material" sticky thread.  

WOW

There are a whole load of numbers for which 6n plus or minus 1 is not prime, but the important point is that

6n plus or minus one covers all of the primes greater than 3. 

I never knew that.  Is that one of those things that plebs like me just have to accept, or is there an understandable proof floating around out there in the ether?     

Hi Chris

I couldn't work out what was wanted either  

Your answer is a good one though. 

It might help if you give us an example that we can talk about :/

@@ End of Day Wrap  Wed 10/6/15   Sydney, Australia Time   10:10pm   ♪ ♫

Good day to you all,  

Today, our ingenious answers were provided by Heureka, Dragonlance Eloise1st Radix, CPhill, MathsGod1, VlenkovAryguyta, Alan, TitaniumRome, Fiora, BrittanyJ, Geno3141 and Bertie.   Thanks you.

Thurs 11/6/15

If you would like to comment on other site issues please do so on the Lantern Thread.  Thank you.    

Interest Posts: 

FTJ means 'For the juniors'