Studying for old units (a-level)

[IQScience]

Okay, so this isn't actually a chemistry or biology homework question as such.
I just didn't know where else to ask this question, if somebody could redirect me to the correct place if it's not acceptable to post this in here, that'd be awesome :)

So basically, I'm studying A-level chemistry, biology, and physics A, on the AQA board (England).
I've completed units 1, 2, and 3, currently going into A2 level.

I'm studying for units 4, 5, and 6, but is it a good idea to still revise units 1, 2, and 3?

Thanks.

 

[mfb]

Academic Guidance is the right forum for questions like that, I moved your thread.

 

[verty]

I recommend against paying too much attention to the old stuff. You need to be focusing on the new content. If you find there are things you aren't good at or don't know so well, then by all means go over those problem topics. My thinking is, one only has so much energy for study so it should be used on the new stuff.

However, if your exam covers the old work, then you should revise it so that it is fresh in your mind.