CGP AS Biology has Units 1 & 2, A2 Biology has Unit 4 & 5 - where are units 3 & 6??

Hello

I have the CGP Edexcel Biology A-Level Complete Revision and Practice books. There are 2 books: AS and A2.

BUT, the AS book has units 1 & 2. The A2 book has units 4 & 5. Where are units 3 & 6?? Am I missing something? Do these book units correspond to the exams, or maybe they don't correspond to the Edexcel A-Level modules?

Any advice/assistance would be very appreciated!

EDIT: The Unit 3 and 6 exam papers seem to be an evaluation of practical skills. Is this why there are no Units 3 or 6 in the CGP books? They do have 6 pages in total on "How to interpret experiment and study data". Am I correct in understanding that the Unit 3 and 6 exams are where you show how you could use what you've learned in the rest of the modules in an experiment/study situation? And show how you can interpret that information?

Unit 3 and 6 for most science a levels are the practical assessments So yes its how you go about an experiment and interpret data

Hello
Thanks for the reply. Are the core practicals for these exams (units 3 and 6)? Or to prepare, I just need to know all the rest of the biology a-level (units 1, 2, 4 and 5) and study the sections about how to "interpret experiment and study data"?

I have the Edexcel A2 (but not AS) Biology Revision Guide, and that also only has 6 pages(!) on the Unit 6 exams. The AS book only has 4 pages for the Unit 3 exams. This is all we need to prepare for those exams? (Of course, aside from learning the rest of the a-level biology material.)

(Sorry for all the questions, but I had a little panic last night when I could only find a few pages to prepare for these 2 exams!)

I did a different exam board for my a levels but the practical was related to a topic we had studied in either unit 1 or 2 for AS, i think it was to do with enzymes so you had to know a little theory for it but most of the marks were to do with the experiment itself.

I did a different exam board for my a levels but the practical was related to a topic we had studied in either unit 1 or 2 for AS, i think it was to do with enzymes so you had to know a little theory for it but most of the marks were to do with the experiment itself.

By the way, I've found a good book (I think, it's by Hodder) specifically on the Units 3 and 6 exams by Edexcel. Still only has about 60 pages(!), but hopefully this should help me.

If anyone would like it, let me know!