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Found 58 results

  1. I have my Physics exam tomorrow and I have a few questions in various chapters. Measurements and uncertainties: If in a calculation, I find the answer to be 500, but the numbers that I used all have 3 significant figures, would I be able to give the answer as 500? Does that have 3 significant figures? Or would the answer be 5 x 102 ? When finding the absolute uncertainty with the percentage or maximum/minimum method, what are some rules that apply here? In my notes I wrote down that if there is addition or subtraction in the original equation, then I must add the absolute uncertainties. But when there is multiplication, division or indices, then I must add the percentage uncertainties. Is this correct? Kinematics: I'm really confused about a question in a Paper 1. "A constant horizontal force FA is applied to a block m1. Block m1 is in contact with a separate block m2. The blocks remain in contact as they accelerate along a horizontal frictionless surface. m1 has a greater mass than m2. Air resistance is negligible. Which statement is correct?" So I picked D which was "The force that m1 exerts on m2 is equal to F", but I was wrong and the actual answer was B "The force that m1 exerts on m2 is less than F". Why is that? Thermal physics: I would appreciate any common examples/questions involving the method of mixtures, since I haven't succeeded in solving one yet. By method of mixtures, I mean mcΔθ = mLf + mcΔθ. Would this equation work in every situation or should I be careful? Circular motion and gravitation: For g = F/m, if you have a satellite orbiting a planet, is 'm' the mass of the satellite or the planet? For tanθ = v2/Rg, what does 'R' represent? Is it the normal force or the molar gas constant? Also, when you write ' -g', does that equal -9.81 ms-2 or +9.81 ms-2 ? General: Does uppercase P stand for power and lowercase p stand for pressure? Also, how should I approach ratio questions?? I sometimes get them right but sometimes not. What should I start with?
  2. Paper 1 The purpose of this thread is to introduce you to Paper 1, the Source Paper. Whether you are taking Standard Level or a Higher Level examination makes no difference as, rather unusually, the sources and questions are the same for both examinations. The reason why I'm doing this is that I've came to notice there's a lot of people here in IBS which don't really understand what's required for this paper. There are three Prescribed Subjects assessed in Paper 1: Peacemaking, Peacekeeping – International Relations 1918–36 The Arab-Israeli Conflict 1945–79 Communism in Crisis 1976–8 For each Prescribed Subject there will usually be four written sources and one visual or table-based source. The length of the written sources does not have to be equal, but they will be approximately 750 words in total (including attribution). A variety of sources will probably be used, taken from a selection of contemporary and more recent material. There should be some background information about the writer (e.g. Professor of United States History at Yale; A Russian journalist). In some cases the sources might have been edited and ellipses (usually seen as three dots – …) will be used when three or more lines of text are deleted. In some sources, alternative words will be placed in brackets, if a word is seen as particularly difficult, e.g. ‘belligerent’ [warlike]. Remember that you can use a simple translating dictionary in many IB examinations and you should ask your IB coordinator if you are entitled to have one. When answering a source paper in IB History, you are essentially comparing and contrasting sources against each other to arrive at a conclusion, which you can justify. In simple terms, you are being an historian. Types of Sources: When analyzing sources, the simplest means are often the best. Try using the ‘five question’ approach, also known as the ‘five Ws’: Who wrote the source or produced it? Origin When? (Origin) Where? (Again, origin) Why? (Purpose) For whom? Who was the intended audience of the source? (Purpose) Photographs: Over time the reasons why photographs have been taken have changed. In the 19th century they were used to record an event, or document how someone looked, almost as if the photograph was a portrait painted by an artist. In many of these photographs the subjects have been posed and, whether we realize it or not, when we know that we are being photographed we change our behaviour or our posture. If, in a photograph, everyone is looking at the camera you can be almost certain that this has been staged. You must remember that the person taking the photograph is not neutral and has a particular reason for taking it. Why is the particular photograph above being taken? What is the photographer trying to convey to the intended audience? What is surprising to IB examiners is the number of times in IB source examinations students write that what a photograph depicts is an accurate representation of the events it is recording. The context of where and when a photograph is taken must also be taken into account when analyzing it. There have always been, and always will be, countries that censor what is published in newspapers or books to rewrite history. Just take a look to the way people use photoshop to manipulate photos right now! However, despite their obvious limitations, photographs do have tremendous value for historians in that they can document particular events better than many other sources. A picture of, for example, Hiroshima in August 1945 after the dropping of the atomic bomb on the city powerfully communicates to the world the devastation and destruction of the city. Cartoons: One of the most common non-textual sources in IB source examinations is the cartoon. This type of source can be challenging to understand. Cartoons refer to something that was current at the time, and if you do not know the context of the cartoon and the events or people to which it refers, then you may not be able to understand its message. Cartoons tend to oversimplify the events they are describing, so may not explain the full reality of events. Finally, of course, cartoonists use symbols to represent the characters or countries they havedrawn. For example, what does this image represent? I think we all agree it represents the soviet union right? Another example would be the grim reaper carrying a scythe to represent death. Guys, in the examination the most probable thing is that we will face some symbols that are not really as easy as understand so yeah, basically, be ready. Posters and Graphs: The most important details about these sources are who made them and for what purpose , although the ‘five question’ approach can also be used. There are many different types of poster: election campaign posters, announcements of concerts or events, propaganda posters, military recruitment posters and so on. Students are sometimes surprised to see statistics and graphs in a history source examination, but it is perfectly appropriate to include this type of source, particularly when dealing with any economic theme. Maps and paintings occur very rarely in the Source Paper, but there is no reason why they could not appear. Maps, in particular, can be used to make a political point rather than simply express a geographical reality. Ask the ‘five questions’ and be careful when analyzing a map. Textual Sources: Textual sources are simply too numerous to list, but the most common ones used in IB History source examinations are books, letters, treaties, diaries, newspapers, magazine articles, diplomatic documents, telegrams, written records of interviews, poetry and speeches. In all cases, the introductory lines at the beginning of the source will give you all the information you need to analyze it. Use the ‘five question’ approach. Do not make comments saying that a source has been translated and therefore we do not know if the translation is accurate. Rarely is this a useful comment to make. Nor should you write that, as it is an extract from a source, we do not have access to the entire source and this is a limitation. Neither of these comments is likely to receive credit. Types of Exam Questions : Questions 1a and 1b: These two parts will be worth a maximum of 5 marks together. Remember that there are 25 marks for this paper and 60 minutes to answer the questions. This means that somewhere between 10 and 12 minutes should be spent on these two parts of Question 1. These questions are intended for you to show your knowledge and understanding of the sources. Question 2: This question is worth 6 marks, so how much time do you think that you will have to answer it in the exam? The wording of Question 2 will be something like this:‘Compare and contrast the views expressed about… in Sources A and C.’In other words, what are the similarities and differences in the way that the sources refer to a particular event? Please note that ONLY TWO SOURCES will be used. This question is intended for you to show your application and interpretation of the source. Question 3: This question is worth 6 marks. ? The wording of Question 3 will be something like this: ‘With reference to their origin and purpose, what are the value and limitations of Source A and Source C for historians studying the policies of Gamal Al Nasser. This question is intended for you to show your synthesis and evaluation of the sources. Question 4: It is worth 8 marks. The wording of Question 4 will be something like this: ‘Using these sources and your own knowledge analyze the importance of the Italian invasion of Abyssinia for international relations between 1934 and 1936.’ This question is intended for you to show your knowledge, understanding, synthesis and evaluation of the sources. Kind of a mini essay. This was kind of a brief summary on what you should expect and be prepared to encounter in Paper 1 guys, study study study study study. I hope it was helpful! Bibliography: History for the International Baccalaureate. Paper 1. Pearson. Brian A. Pavlac. 2006. Sources http://intensecogita...e-history-notes
  3. I need ideas for my physics EE. I want do do something in optics Idealy in optics involving something like polarization of light, diffraction, reflection, reflection, interference, or basically anything¡g in unit 9. Nonetheless, I don´t have any ideas, and I need help desperately. All the ideas I have are questions wich have already been solved,and I really need ideas. HELP
  4. Hello! I am looking to do an EE in Geography (I take geo HL), on the topic of gender equality, specifically in India. I have found good preliminary data and statistics that I would like to write about, but since we need to be investigating a question and not a topic, how do I phrase a question that can be answered in 4000 words? I think the gender equality is a large topic, with subtopics such as education, fertility, contraception, cultural prejudices and etc. So if I do a question like 'to what extent is gender inequality present in India?' it is quite difficult to answer. Any help/suggestions are much appreciated!!
  5. Hello procrastinators, Are IB paper questions ever repeated? Now by repeated, I don't mean word-to-word––is it possible that papers can have the same question, but with a different wording? When I was in IGCSE, all my teachers said that questions will never be repeated. But after doing many past-year papers, I realized that questions were repeated, usually not word-to-word. I'm not talking about those small definition questions. Are other questions repeated? Thanks!
  6. So our teachers give us lots of worksheets which have questions from IB past papers, but they don't collect them to correct them. Is there any way I can find the mark schemes to these answers? They do not give us the paper number, so I can't find them online. Using the question bank software might not be an option for me as I use a mac. Is there anything I can do?? Thanks!
  7. Hi, I'm planning to write my EE on the book "Spies" by Michael Frayn as a Category one. I was wondering if anyone could suggest any research questions for it or possibly suggest any books to compare it to. Books in the genre of growing up or coming of age would be appreciated. PLEASE, Thank you. :')
  8. Hi! Having completed Math SL and scored a 7 on the exams, would math HL be an okay transition in terms of difficulty/understanding concepts?
  9. Does anyone have chemistry p1 or p2 questions specific for a certain topic in chemistry? I mostly have past papers but as I have not yet studied all the chapters in chemistry, I have a hard time trying to answer to the questions that combine knowledge from multiple topics If someone wants, I can send 95 questions with specimen answers related to Energetics and Thermochemistry
  10. Hello there! I'm currently struggling with the tok essay , i chose the 5th prescribed tittle 'the best explanation is the simplest explanation' .since it is necessary for the maximum grade to have ''a sustained focus on knowledge questions connected to the prescribed title—developed with investigation of different perspectives and linked effectively to areas of knowledge and/or ways of knowing.'' this is not clear enough since i read reports about the tok essay that said many students didnt use knowledge questions properly , plus we dont have anyone that can help us with tok in the highschool ,if you know how to use them in the essay could you explain them please?
  11. Does any body know someone or is someone who writes IB style multiple choice exam questions?
  12. Hello everyone, I'm back with some new free videos ¯\_(ツ)_/¯ This time it's about a workshop (six 10 minutes videos) to help you prepare for the Physics SL/HL exam. Here is an overview. Video #1. where you can get started with a simple quiz and learn: Which topic typically has the least marks allocated to it? And which topic the has the most marks? (same is true for SL/HL, Paper 1 or 2) Video #2: where you learn useful details about the exam, such as: The relative weighting of each exam. For instance paper 3 is relatively easy and worth as much as paper 1 (for SL) What IB means for complexity and nature of science, explained through past papers questions Paper 2 is getting longer and longer (you might not finish it) Videos #3, #4 and #5. These will go through each of the 12 topics and show you: The most common subtopics that you should revise more than the others A quick refresher about what these subtopics are ...and yes, also a topic-specific meme or joke Video #6. This will wrap everything up with useful exam tips like: Choose the question order tactically Know how to find surface area and volume of a sphere ...and more! Ready to get started? Start here with the first video and quiz yourself Good luck with your studies! Giacomo
  13. Hi! I have some questions about the EE. I am doing my EE in Spanish A Literature HL. I already have the books I want to analyze, my question and my supervisor accepted it. I want to analyze the use of setting of two different books. This is the research title nd the research question I want to work on: Research Title: Una exploración, comparación y análisis de los espacios diegéticos en dos novelas, Pedro Páramo y Cien años de soledad Research Question: ¿Hasta qué punto los espacios diegéticos pueden considerarse personajes en las novelas Pedro Páramo y Cien años de soledad? Now, the questions... Do the quotes count as words in the 4,000 words? How many paragraphs (approximately) does a 4,000 word essay look like? Do I need to add reference for a Language EE?
  14. I am currently 16 years old and in my sophomore year and have decided to go with the IB program offered in my school. I have decided to study in the UK. Before I submit my application which is due in a few weeks, I have some questions. I am planning to do either Software Engineering or Electronic Engineering as an undergraduate course and I just wanted to know if the following courses are suitable for it: HL - IB English, IB Physics and IB Economics SL - IB Spanish AB, IB Chemistry and Mathematics SL I have noticed that some schools in the UK and US do pre-IB summer programs, however, there is no such program in the country I live in (Saudi Arabia). I just wanted to know if they are helpful or needed? If yes, are there any online programs of the same? IB English HL - Is this a good choice or should I do another HL, like Mathematics HL instead?
  15. car829

    History IA

    Hi guys, Please help me, I need help with my history IA topic: I cannot decide which question to do. However, I am leaning towards the origin topic question, but it is not "IB worded," and I cannot think of a way to make it IB. I think these questions are sufficient, but I really do not know. Any feedback at all would be awesome...I am panicking because section one of my paper is due next week and I do not know what I am writing about yet! Thank you very much!!!!! To what extent did the Spanish Flu impact Spain’s population and religion? How did the Spanish Flu travel from its origin point to Spain? Where did it come from?
  16. Hey guys, I am thinking about writing my Extended essay in English literature ( i am in HL) I thought about talking about " how to kill a mockingbird ", any suggestions of what my title could be?
  17. Discussion for the May 2017 TOK prescribed titles: “It is only knowledge produced with difficulty that we truly value.” To what extent do you agree with this statement?
  18. I recenetly started on my TOK essay after choosing question number five: Given access to the same facts, how is it possible that there can be disagreement between experts in a discipline? Develop your answer with reference to two areas of knowledge. I am simply wondering how many knowlegde questions it is normal/appropriate to discuss during the length of the essay. Any advice is highly appreciated :)
  19. Hello! I need help to collect my data for my mathematics IA. I am doing the correlation between GPA and sleeping hours. Could you please answer this survey? I really need more data THANKS! https://goo.gl/forms/Y3SnZ9LKPxFj2Ehg2
  20. Ok, So my biology internal assessment is a little... made up. I have no idea if it will work, neither does my teacher, so I'm like praying to god it will. What I'm trying to do is look at the effect of ethanol on photosynthesis, doing the test where you get spinach leaf disks and wait till they float to see what rate they produce oxygen at. I'm planning to change the concentration of ethanol in the solution, hoping it makes an effect of some sort. I have 2 questions 1) the density of ethanol is less than water. Do I have to mention this? its about 78% the density of water, is there anyway I can do a calculation to account for the affect that the lower density will have on reducing the ability of the leaves to rise? 2) if it doesn't work and I don't really get any results, can I still salvage a decent mark? Bio is really the subject I care the most about, would be good not to lose 20% because I did something stupid... Did anyone else do something they weren't sure about and still get a good mark?? (by the way, I'm doing it on monday. No i cannot change, trust me I've tried...)
  21. Hey do any of you know where I can find practice question for option C? So far I've only done the specimen paper and questions from the oxford textbook. Also are there any data analysis tips/tricks I should know about for paper 3? Thanks!
  22. Could anyone provide tips for approaching and completing the Collaborative Project (in Theater HL)? Specifically, could anyone provide clarification on how to get full marks for Criterion A and Criterion B? Criterion A: The personal context and research into a professional company To what extent does the student present their own personal context and outline their own approaches, interests and skills in theatre? To what extent does the student present their research into the approaches used by a professional company that creates and stages original pieces of theatre? Criterion B: The formation of the group and exploration of the starting point (including target audience and intentions for the piece) To what extent does the student reflect on the process involved in forming the collaborative group? To what extent does the student explain how the group went about exploring the starting point, which includes identifying the target audience and intentions for the group? Any advice, help, etc. is appreciated.
  23. Q: Describe the adaptations of plants in deserts to conserve water. A: Desert plants have adapted to the extreme of heat and aridity by using physical and behavioral mechanisms. Plants have adapted by altering their physical structure - xerophytes (cacti). Phreatophytes are plants that have adapted to arid environments by growing extremely long roots to acquire water further underground. I feel like this is not a full answer, the question is worth 4 points so I feel like there's more to it. What am I missing?
  24. Ok guys, so what do you think is a good format for an IOC? Im doing mine on a short story For short stories, we are given only a certain extract, so that kind of limits the scope I can go about them. How often can I go beyond the selected extract of the same short story? Moreover, how often can I relate this short story to other short stories? Is this considered a good format btw: Intro Purpose Mood Tone Characterization 2-3 Themes 3-5 literary devices Relating to other short stories
  25. Hola! No he visto a muchos españoles por aquí. Me gustaría saber donde están estudiando y como es el bachillerato ahí. Aquí es prácticamente nuevo todo esto así que sería de gran ayuda algunos tips y consejos para afrontarlo. Thanksss
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