Self-teaching Maths A level...

I don't want to be overly negative but I think it would be a hell of an achievement for you to attain a pass grade at A Level in 6 months coming from a starting position of a C at GCSE in 2004.

A Level Maths is a LOT more difficult than GCSE and students who attained A and A* at GCSE do not always cope with the transition. Remember, most A Level students have two years to build up their algebra skills and are being taught the content.

To have even the slightest chance, you ought to be able to answer most of the following questions:

a) Expand (x + 2) (3x - 1)

b) Factorise 12a² + 9ab

c) State the gradient of the straight line y = 2x - 3

d) Use the quadratic formula to solve 2x² + 4x - 1

e) Solve y² + 3y + 2 = 0

f) Solve the inequality 4x > 2x + 1

g) Calculate, to 2 decimal places, the longest side of a right angled triangle if the two shorter sides are 5 cm and 6 cm.

h) Calculate, to 3 significant figures, the area of a scalene triangle with two sides of lengths 3 cm and 7 cm and an included angle of 40 degrees.

i) Calculate the area and perimeter of a semicircle of radius 5 cm.

j) Rearrange the formula p = 4q + 2 to make q the subject.

k) Solve the simultaneous equations 2p + q = 5 and 3p - 2q = 20

Having not done maths for 4 years, I do not believe she will be able to recall that. But I see your point.

It will be hard, she knows that though, she is willing to put the effort, and then the consequences will be seen. The effort is the first step though

I think you can do it!

I am teaching myself French and Physics both iGCSEs by myself at home in just under 6 months. I also go to college and have a job, so yep anything's possible!

It will take a lot of effort, especially trying to do 6 modules but like anything if you're willing to put the work in, it will be fine

I'd think really hard about it.
There's a class at my school for people doing A-level maths in one year and then going on to further maths.
basically, these people all got A*s at GCSE when they were in year 9, then did GCSE Additional Maths, now have 10 hours a week of maths lessons with decent teachers. Even they couldn't manage the whole A-level in 6 months, and they're like MATHS GENIUSES. (yeah, they're annoying!)
i'm not saying there's no way you can do it, i just think you'll need more than 6 months to do it in.

its possible lol im doing it but only for AS then show my college that i am worthy of doing it for A2. i got a C in gcse so they wouldn't let me. i done C1 in jan and i got a C but im resiting it and just do as muuch past papers as possible i don't know about C3 and C4 but as should be possible to self teach iv done it lol

Youd have to make sure you have a good grip on gcse maths too, stuff like algebra, rearranging equation, trig/pythagoras, volumes all come to mind

I suppose it's possible but it will take a lot of effort. I got an A* at gcse with absolutely no revision but I found A level very hard. I got a B for C1, a D for C2 and a C for S1, and realised I needed to put a lot more work in if I wanted to get a decent grade. I resat C1 and C2 at the end on yr13 and ended up with AABCDE (C4 was completely beyond me!) which to my delight was a B overall. What I'm trying to say is that you need to be prepaired to put a lot of time in and you would almost certainly need someone to help you when you get stuck in a rut.

Realistically, it's going to be very difficult to get a C or above in six months having achieved a C at GCSE in 2004. That's steep. Effort and quantity of work sometimes doesn't cut it; it can take time to get back into the groove of things-- whether this be manipulating numbers and algebra (rustiness takes a while to shrugg off) or simply organising yourself most effectively for homework.
I took a few years out after an A at GCSE, but it took me about 3 months to get into the flow and that's including reviewing some GCSE material (you have to start somewhere!). I self taught also but the A level took me a year--in all honesty, getting to grips with the AS stuff and managing my timetable was much more difficult than my A2 exams (those were relatively easy). It's all relative: coming from practically nowhere to do AS is harder than the jump from AS to A2.

Why can you not sit some exams in Jan and the rest in June?

I'd think really hard about it.
There's a class at my school for people doing A-level maths in one year and then going on to further maths.
basically, these people all got A*s at GCSE when they were in year 9, then did GCSE Additional Maths, now have 10 hours a week of maths lessons with decent teachers. Even they couldn't manage the whole A-level in 6 months, and they're like MATHS GENIUSES. (yeah, they're annoying!)
i'm not saying there's no way you can do it, i just think you'll need more than 6 months to do it in.