My teachers were lucky if I turned up with paper most of the time tbh, and I did IB
Always had my trusty TI-89 though!
You'll need a whole set of stuff for art/textiles, separate to your other subjects. Your teacher(s) will probably advise you before you start, or on the first day, what you need (and if they provide it or if you can buy it in school).*
If you take Biology you will likely need a standard scientific calculator (not a graphing one, just a typical one you can buy in tesco or something that has e.g. log and trig functions etc; you probably have a suitable one from GCSE already. DO NOT buy a graphing calculator for Biology...). You may also need some graphing paper or a lab/logbook (which should usually have graphing paper on every other page/side) - I would suggest seeing what the teacher says though, as they may just provide such stuff as and when necessary (I'm not sure how the new science endorsements work, all the work may be contained in exam style booklets handed out and collected in session). A ruler may be useful for drawing graph axes if you're not particularly good at drawing straight lines, although as long as they're clearly perpendicular I doubt it'll be much of an issue.
For other subjects you'll just need pen and paper, the level of additional material you'll need to organise them depends on you though; there's no point buying 15 folders and stickers and all kinds of stuff if you aren't actually going to use them (or worse, you're going to go the "obsessive highlighter" route, of highlighting everything in all handouts and putting stickers and labels on everything without actually learning any of the material...). I would say though, having a lever arch binder as suggested kept at home (or if you have lockers at school, there) can be handy to consolidate material. They're quite bulky and not really suited to being carried around, especially if you only have 3 or 4 subjects.
I would on that latter point suggest you carefully evaluate if it's worth taking 4 subjects as suggested. It's normally inadvisable to take more than 3 unless two are Maths and Further Maths (due to the cumulative content for those). I would especially suggest caution in taking two design subjects, which are huge workloads individually, as well as an essay subject AND either a science or a language (especially the latter, as languages also have enormous ongoing workloads). Coming from someone who did IB (including art), I think you have a much higher than reasonable workload...of course if your school requires 4 subjects it is somewhat unavoidable, but I would suggest particularly considering whether taking two design subjects is feasible. It is reasonably possible to explore textile based artworks/sculptures in Art & Design, without taking the individual A-level itself (this would be in terms of creating "art" with textile materials, rather than creating e.g. clothing or similar), so you can certainly explore this angle while taking another subject in lieu of Textiles (the reverse isn't as true).
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