# deissi

IBS Alumni

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1. ## IA Help with "Circles"

How much is this question worth? If it's +5 points, that probably means that you need to "think" a little harder because the question requires at least two different steps. So, maybe you need to use two different equations to find your answer This isn't a normal maths exam question, it's part of the IA, which is composed of multiple questions. Take a look at some example IAs (I think there are some on the forum) and you'll understand that it's a whole other world.
2. ## Continent Wars

Africa 199 Europe 53 Australia 108
3. ## Continent Wars

Asia to EU Asia 4 Africa 191 Europe 53 Australia 112
4. ## IA Type I -- Stellar Number

There's a command called seq on TI GDCs. I vaguely remember being able to use it together with the sum command, something like this: sum(seq(formula, variable, start, stop, step)) If you have catalog help it will tell you what you need to put in to get a value. You can then say what you did with your calculator, or even type what you typed in your calculator. Just indent it like I did above. Quick Google for "TI seq" gave me this: http://tibasicdev.wikidot.com/seq-list
5. ## Good SATs but bad predicted IB; now what?

You'll be fine, US schools look surprisingly little at your IB predicteds. Sure, MIT might turn you down because of that HL Math 5, but if you're essays portray you as a social science type rather than a natural scientist, you should be fine. A friend of mine, for example, got accepted into Stanford and Duke with worse SATs than you and about similar predicteds.

7. ## Were you initially over, under or in the word count range on completion of your first EE draft?

My first English B EE draft was something like 3000 words and I finished at 3600. It's not always about length, you can get an A if the content is good.

9. ## IA Type II -- Population Trends in China

Use some kind of an excel table with the data. It might seem very useless but it's using technology according to the IB. You could, say, have a table for values that the researcher's function yields in 2020, 2030 etc. The modelling software you use for the graphs is also technology. So is using your calculator.
10. ## How accurate are predicted grades?

What a few people here are failing to take into account is that it is much easier to predict someone a 7 in a subject than a 5. A 5 can easily change into a 4 or a 6 after moderation or a good/bad final exam performance. On the other hand, people who do well in school can be predicted high 7s, and their actual exam marks are well above the mark boundary for a 7. Therefore, slight moderation or relatively poor exam performance would not lower their score to a 6 from a 7.
11. ## IA Type I -- Logarithm Bases

You should be able to derive it mathematically yourself. If you can't, try to find the pattern between the answers in the previous question.
12. ## IA Type I -- Stellar Number

Help from your side would be appreciated too. Care to share any information you've been given? Thanks .
13. ## - Fishing Rods Type 2

You should not be doing this portfolio without matrices, did your teacher assign it to you without first teaching matrices?
14. ## - Fishing Rods Type 2

Just use a few decimal places and be consistent. SigFigs don't really work that well with a project like this.
15. ## Further Maths

They call it that because all IB courses are either SL or HL and the number of lessons Further Maths should ideally be taught in is the same as with all SL subjects. They call it that because all IB courses are either SL or HL and the number of lessons Further Maths should ideally be taught in is the same as with all SL subjects.