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eross last won the day on January 28 2016

eross had the most liked content!

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    May 2016
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  1. eross

    Math HL Paper 2

    I did tz1 and found it much harder than a lot of the past papers I had done The goat question... i just left it blank. AND the poisson one gave me trouble too. and don't even get me started on section B...
  2. eross

    English A Literature HL Paper 1

    @merging @ShootingStar16 @Bayan N. I talked about the connections between the sounds of the machine and the music of the piano, as well as the connection/bond between the daughter and father/ student and teacher. I focused more on diction & word choice, and the use of similes and metaphors in order to represent this connection. I'm not sure if I did well though
  3. eross

    English A Literature HL Paper 1

    @JamVaun I did the TZ1 poem, but why did you call it the mask one? It was about a machinist teaching his daughter piano right? I'm scared because I finished like 25 min early...
  4. eross


    1 paper done, 14 to go! Good luck everyone!
  5. Eng. Lit Paper 1 is tomorrow Anyone else feeling unprepared?
  6. eross


    Well, I think the stress is at its peak now... 1 DAY anyone else freaking out right now?
  7. eross

    Chemistry P1 energetics question

    Hi! Yes, you need to calculate the change in temp in kelvin, but that's what you did wrong 20 C = 293 K and 50 C= 323 K So change in temp = 323-293 =30 K. You might have noticed that this is the same as doing 50 C-20 C; the CHANGE in temperature in Kelvin is the same as the change in temperature in Celsius (very important to remember that this only applies to change in temperatures) I hope this helped clarify your doubt
  8. citing material from the internet is not plagiarism as long as you give credit to whoever said/wrote what you're quoting; citing a lot of sources and material could give you lower marks if the examiner feels you haven't really put much work into your IA, but it will not count as plagiarism. Even if you didn't quote all of it but you "didn't make a deliberate attempt to gain an unfair advantage", this will not count as malpractice, so while you might get 0 marks for your IA, you're still eligible for the award of the IB diploma. you can find this in section B of the IB Handbook (Articles 25 and 26 ) Also from the Handbook (section C): (Plagiarism counts as malpractice) "The school’s Diploma Programme coordinator must inform the IB Organization if he or she identifies any malpractice (for example, plagiarism) in relation to a candidate’s work after the candidate has signed the cover sheet to the effect that it is his or her own work and constitutes the final version of that work. In such cases, or when an examiner or the IB Organization suspects malpractice, the school will be required to conduct an investigation and provide the IB Organization with relevant documentation concerning the case. If questions arise about the authenticity of a candidate’s work before the cover sheet has been signed, that is, before the work has reached its final stage, the situation must be resolved within the school. Candidates suspected of malpractice will be invited, through the school’s Diploma Programme coordinator, to present a written explanation or defence. Cases of suspected of malpractice will be presented to the final award committee, or a sub-committee of the final award committee. After reviewing all evidence collected during the investigation, the committee will decide whether to dismiss the allegation, uphold it or ask for further investigations to be made If the final award committee decides that a case of malpractice has been established, no grade will be awarded in the subject(s) concerned. No IB diploma will be awarded to the candidate, but a certificate will be awarded for other subject(s) in which no malpractice has occurred. The candidate will normally be permitted to register for future examination sessions, which may include the session that follows six months later if the relevant registration deadlines are met. If a case of malpractice is very serious, the final award committee is entitled to decide that the candidate will not be permitted to register for any future examination session." So. if you get caught plagiarizing, you will lose the diploma; I do not know about the university question. Hope this answered your question
  9. eross

    Calculation Guide?

    I hope you realize this is by no means a complete list of the things you ought to know, but it should help. You need to know: how to find linear regressions from a table how to find probabilities for both the binomial and the normal distributions; also how to use the standardized normal distribution (z-distribution) how to use your graph menu; i.e be able to graph pretty much any function, but specially polynomials, exponential, and rational functions this also means finding intersections of graphs, roots, y-ints, points when you have either the x or the y value, etc. how to calculate binomial coefficients (nCr) and factorials how to find the area under a curve for defined bounds / the integral from a to b of f(x) how to find the derivative of f(x) at a point how to solve systems of equations (for sure two variables, I don't know if you need three at SL) Those are all the things I could think of, but look at your syllabus (you can find it online -- it's the 2014 onwards version) to check that you know everything. And remember, in Paper 2 USE your calculator for EVERYTHING you can. Doing the algebra in problems you can easily solve with your calculator in paper 2 is wasting valuable time, as the exam is planned assuming you will use your calculator. Good luck! and I hope this helped
  10. eross

    Innacurrate results foir Maths IA

    hi! I'm not sure I understood correctly, but if you are throwing an object (such as a ball) in freefall: when an object is freefalling, there are two forces acting on it gravity (in the downwards direction); (you might see it mention as the weight; this is mg, where m is the mass of the object and g is the acceleration due to gravity (9.8 m/s^2 )) and air resistance (in the upwards direction) --> the faster the object is falling, the more air resistance there is, until the air resistance equals gravity (but in the opposite direction). This is when the falling object reaches a constant speed, also known as the terminal speed. But BEFORE the object reaches terminal speed, the forces are unbalanced (Gravity is stronger than air resistance); by newton's first law of motion, the object is accelerating (so its velocity is CHANGING). Since the velocity of the freefalling object is changing through most of its fall, the equation distance/time does not work. It gives you an average of the velocity over the whole path of the ball, but it does not give you the instantaneous velocity at a point. Hope this helped clarify your doubt!
  11. eross

    Calculator problems (Casio fx-9750GII

    Hi! I don't know about 1) and 2) (I think they are not in the HL syllabus). Is NCD and NPD the normal distribution functions? (or are you talking about the permutations/combinations nCr and nPr?)
  12. wow! you are very brave then, because in my experience HL/SL mixed classes are not too good... usually the HL people are left on their own for a lot of the time. First and foremost: your book. Use your book. Read all the explanations and all the examples. Do all of the problems. This might seem obvious but it's really the base of your learning (does your school give you your book? if they don't, make sure you buy a good one- my school uses the Haese & Harris one which for me worked really well, although their option book was not so good). I've also used this youtube person who makes tons of math videos-- specially useful for all the calculus! He is really amazing and explains really well. Plus, you can get extra practice by trying out the problems he shows BEFORE watching the video of how he solves them. Find out if your school has bought the IB past papers or has access to a question bank; I would say don't worry too much about past papers during the first semester (and not even a lot during Year1 in general) but do make sure you have tons of those to do and practice during Year2. If your school has not bought them, you will have to try to find some online- this could be hard as technically the IB does not allow people to post past papers online (copyright reasons). Note that from before 2008 they are not too useful as the syllabus changed quite a lot since then. My school also enrolled in Smartbacc; I personally haven't used it much, but there's exercises and problems and explanations, so you might want to look into it. and of course there's always IB survival if you need help with a specific question Hope this helped good luck!
  13. eross

    Confused by group 4 project

    I'm not an expert on the G4 project, and I think that how you do it depends on your school (in mine we had to come up with a strategy that would benefit the environment and present it in a science-fair kind of thing). But it is a project in which you have to collaborate (usually in groups of three or four) with people from your class but who take different science courses (ideally you have one Bio/ESS, one chem, and one physics person per group). The G4 project is not graded; you get a Pass/Fail (it's an IB requirement but no grading involved). It does not get sent to the IB, but you have to write a really short (I think it was like 100 words) reflective statement explaining what you did for your project; this goes in the cover sheet of your IAs. again, I'm not an expert, so anybody reading this: feel free to correct me if I'm wrong.
  14. Hi! So first of all, I want to say some things about the math IA in general: as long as the math is commensurate with the level of the course (so in the HL syllabus or a bit beyond), you're more than fine. You don't have to go into really complicated, time-consuming ideas. And even if you use an SL topic, you can get 3/6 points in Criterion E (mathematics), which would mean you could still get a 17/20. So don't worry too much about the complexity of the maths. It's better to do a simpler topic, and explain it well, so that you lose some points in criterion E but gain all the other points (communication, persona engagement, reflection, and mathematical presentation), than to do a topic so complicated that you don't understand it/ can't explain it. make sure you connect you show your persona engagement (this is harder with some topics than with others, but it's doable); this does not necessarily mean that the topic is directly connected to your life (although the IB loves that): you can also show engagement by taking your own data, by finding real life applications of your topic, writing a piece of code (if you can write a program based on mathematical concepts in order to prove/show your investigation, this is a valid strategy), basically anything that explains why you should CARE about the investigation and shows that indeed, you do care. make sure you show reflection too; think about what you're doing, why you're doing it, and what the math means when applied to the particular situation/case you're exploring You seem to have quite a number of ideas, so I'm sure at least one of them will work. I don't know anything about fractal geometry and very little of the Mandelbrot Set, so I can't help much there, or with the Chaos theory (I don't know what that is). The Fibonacci sequence could work! you could make it less experimental by explaining the sequence, talking about the golden ratio, and then trying to show its existence in some places (Renaissance paintings, the shell of a snail, pinecones, lots of things really). The chess one is really interesting! One of my classmates did something with chess and it turned out really well. You would need to narrow it down (your aim can't be "explain chess"); this does not look too simple at all I would recommend against Florence Nightingale because she was used as one of the samples; For my own math IA, I looked at group theory and how it's connected to music theory, and measured the frequencies of the different musical notes and looked at the ratios between the frequencies in the notes in a particular chord to see if they related to the chord's dissonance. I hope this helped; if you have any other questions, feel free to PM me
  15. during mocks my supervisor said that we can use the answer booklets for scrap paper; however I'm aware that math and science exams do not have answer booklets since you answer directly on the boxes, so I'm not sure... I don't know what math class you're taking, but in HL papers we have Section B where we have to answer in pages (no boxes are provided) so if you have section B you will be given pages and you could use one as scratch paper?

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