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Martijn.S last won the day on September 4 2017

Martijn.S had the most liked content!

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    May 2017
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  1. According to the document you posted, there shouldn't be any problems, nor complicated procedures for you to follow. To start, you have a TI 84 Plus CE. In the document, it says "TI 84 Plus – all models" meets the minimum requirements. So there shouldn't be a problem there. Second: they dictate a bunch of things to delete on p.6, just follow those instructions. In my school, the invigilator would walk around the exam room before the exam to reset our calculators (our RAM, in any case), this might not be the case in your school, though. Good luck.
  2. Martijn.S

    Some Questions

    The stereotype of the senior year may be slightly overused and hence slightly exaggerated but there is still a certain truth behind it. The second year is especially challenging because of the amount of IA and other assignments you have to do, as well as the exams that are approaching. So you'll have the regular classes + all the assignments due at some point or another. The best way to decrease the workload in the second year is by doing the maximum in your first year: finish your CAS and do as much as you can of your extended essay. Unless the rules have changed (which I don't believe they have), you're not allowed to start your IAs in the first year (because of the requirements that can change). However, this doesn't prevent you from doing a bit of personal research and having an open mind to at least try entering IB2 with a research question for each subject. Furthermore, once you enter the senior year, try doing your IAs and TOK as soon as possible. Everything you can do in the beginning will spare you the effort when you'll want to revise for exams. In the second year, the workload will increase abruptly (because of the tasks mentioned above), and the best way to handle this is by starting to work as soon as possible as well as working consistently and regularly (try spreading out the tasks and being organised). You're going to have to work much more at home than in the first year, especially if you haven't done a lot then. You can still get away with a healthy dose of procrastination in your first year, but it will have an impact on your score if you continue at the same rate in the future. Best of luck.
  3. Sorry; yes that is absolutely true. Ab initio languages (similarly to mathematical studies) are only available in SL. Thank you for correcting me.
  4. To be honest, you still seem pretty alright. I mean you finished your CAS, your TOK oral, and you have your IA subjects. At this point, the best way of proceeding is by working on a regular basis. Work whenever you have time and try being as consistent as possible. Good luck.
  5. If you're having a lot of difficulties in bio early in your programme, it's a good idea to reconsider your subject, because it won't get easier. You should firstly have a look at your desired university's requirements because this will be the final determining factor. Considering what you want to study, and the difficulties you have, I believe your idea of exchanging your bio and English level is good. You could also consider doing French ab initio in HL, but it really depends on how good you are in French. Also, have a chat with your have a chat with your English teacher and/or French teacher to see in which of the two you have the most potential.
  6. You're pretty correct about the sciences. Biology is the most "learning" subject and uses the least numbers and calculations compared to physics and chemistry. The difficulty will be different depending on who you ask; I did HL and thought it was alright. A classmate of mine did SL and struggled a lot. So it really depends on who you are. If you're able to "learn by heart" and can find some motivation for the subject, it's very plausible to get a good grade. Considering you're saying maths isn't your cup of tea, and you have "a relatively good memory", then bio SL is indeed what I would advise as an experimental science. Best of luck.
  7. That sounds like a solid question, and you can probably go into a couple of directions with that (wind, soil salinity, etc.). I'd personally say that your question is good, but a double check with your teacher does no harm. Good luck.
  8. I don't know the exact values and statistics for remarks, but when you're one mark away, it's worth trying. The probability that your grade changes is small in general. Maths is more of an objective subject so the probability the grade changes is inferior to, say, arts, which is more subjective. I agree; the thought of asking for a remark is terrifying "What if it goes wrong? What if I get a 3?" etc.. I was thinking the exact same when I got my geo and physics remarked. Think about it this way: you're 1 point away from the next grade, and approximately 8 points away from the lower boundary. Even if your points were to decrease, it would have to do so drastically, for your final grade to decrease. In short, your grade is more likely to increase than decrease. You should also be able to request seeing your exams prior to asking for a remark, like that you can see if your grade could potentially increase. This is a category 2B enquiry and costs €12 per candidate, per subject. You could request this and then have a chat about it with your maths teacher to see if it could be worth 6. That is what the handbook says, yes. Best of luck.
  9. If you want to stay in that domain, you could try doing research about whether paper bags are actually "cleaner" than plastic bags considering manufacturing, recyclability, etc. Like @kw0573 said, it's a good idea to have a group reunion and brainstorm about your topic together. Your concern is based on the group 4 projects so it should be posted in that forum, please pay attention to this in the future.
  10. That sounds like an interesting IA, and it's good that you have a solid reason as to why you want to do your IA about this. You can write about your motives in your intro, which will count towards the personal engagement criterion (pp.155-156 of the bio guide). You seem to almost have your IA completely planned out, and you should have a talk with your teacher to see if he has any suggestions. Concerning the Oxygen's effect, that would indeed be an interesting research (and I believe it's the most likely to yield results). The best way to control the oxygen is by placing the yeast in a closed container with a small vacuum pump. You can also get little attachments for your tap (Aspirators) that creates a void based on the venturi principle. The latter is less accurate but also probably cheaper (it's what our school uses, in any case). It would probably be a satisfying conclusion if you could find the limit you talk about (when the efficiency flips drastically). Good luck. My opinion on the other variables:
  11. You should watch out with your topic since it seems pretty similar to one of the compulsory topics (which you aren't allowed to use as IA): "Investigation of a factor affecting enzyme activity" (theses factors being temperature, pH, and substrate concentration). Your method of measuring should also have a certain degree of accuracy. For example, using a colorimeter would be advised to obtain better quantitative results, rather than just "eye-balling" (which would give qualitative results). There is probably a way of doing your IA on enzyme activity but you need to watch out for the three factors mentioned above. For instance, if you do HL, you could have a look at inhibitors. Good luck.
  12. I always advise getting work remarked when it's one point off, and I understand your teacher telling you that. A category 1 remark is not the IA but all externally assessed material, including exams. To quote from the Handbook of procedures for the Diploma Programme 2017: "A7.9.2 Category 1: Re-mark This is a re-mark of externally assessed material for an individual candidate. However, the remarking does not include multiple-choice components of an examination in a group 4 subject or components for which a mark has been carried over from a previous session. A re-mark cannot be requested for individual components. Note that in small entry subjects and in subjects with few candidates for French or Spanish as the response language with a sole examiner only, there-mark has to be undertaken by the same original examiner." (p.154) (By component they mean paper 1, 2, etc.) It is extremely rare that a grade decreases on a remark if you're 1 point away from increasing your grade, which is why it is common for people to do so. Good luck.
  13. Try having a look at radiative decay and half life. That is the most common exponential decay/growth that I know of. For growth, I'd say cell division (especially cancerous cells). There are a couple of good examples on Wikipedia, for both decay and growth: Growth: https://en.wikipedia.org/wiki/Exponential_growth#Examples Decay: https://en.wikipedia.org/wiki/Exponential_decay#Applications_and_examples Good luck.
  14. You should watch out with using osmosis as an IA topic because it's one of the compulsory practicals to do: "Estimation of osmolarity in tissues by bathing samples in hypotonic and hypertonic solutions." I'm sure there are possible topics you can do with osmosis, just keep in mind that you should stay away from the topic mentioned above. You can have a look here: http://www.nuffieldfoundation.org/practical-biology/osmosis there should be something interesting there. Remember that your question should be formulated as "What is the effect of X on Y?" Good luck.
  15. It's advised you write your research question under the form of "What is the effect of X on Y?" (X being the independent variable, Y the dependent one). You could, for example, say: "What is the effect of the concentration of [product] on [catalyser]?". From that, you could find an ideal concentration, where the catalyser works at maximum efficiency. Through this process, you would have determined an ideal concentration of a substance. The problem with "determination of the concentration of a substance", is that it would generally be more qualitative rather than quantitative (that's my opinion, in any case). It might indeed be a good idea to have a look at IA samples from the IB, as @HappyIB:) said. They generally have examiner notes on them and can be of great use if you're not sure about what the IB expects.
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