IB考生快来围观IB考试数学考试技巧指导

下面是关于IB数学考试的技巧指导，希望对申请IB考试的同学有所帮助。

A-level Math Exam Technique

Examiners use certain words in their instructions to let you know 
what they are expecting in your answer. Make sure that you know what 
they mean so that you can give the right response.

Write down, state - You can write your answer without having to 
show how it was obtained. There is nothing to prevent you doing some 
working if it helps you, but if you are doing a lot then you might have
missed the point. Calculate, find, determine, show, solve - Make sure 
that you show enough working to justify the final answer or conclusion.
Marks will be available for showing a correct method. Deduce, hence - 
This means that you are expected to use the given result to establish 
something new. You must show all of the steps in your working. Draw - 
This is used to tell you to plot an accurate graph using graph paper. 
Take note of any instructions about the scale that must be used. You 
may need to read values from your graph. Sketch - If the instruction is
to sketch a graph then you don't need to plot the points but you will 
be expected to show its general shape and its relationship with the 
axes. Indicate the positions of any turning points and take particular 
care with any asymptotes. Find the exact value - This instruction is 
usually given when the final answer involves an irrational value such 
as a logarithm or a surd. You will need to demonstrate that you can 
manipulate these quantities so don't just key everything into your 
calculator or you will lose marks. If a question requires the final 
answer to be given to a specific level of accuracy then make sure that 
you do this or you might needlessly lose marks.

Some Do's and Don'ts

Dos

Do read the question Make sure that you are clear about what you 
are expected to do. Look for some structure in the question that may 
help you take the right approach. Read the question again after you 
have answered it as a quick check that your answer is in the expected 
form. Do use diagrams In some questions, particularly in mechanics, a 
clearly labelled diagram is essential. Use a diagram whenever it may 
help you understand or represent the problem that you are trying to 
solve. Do take care with notation Write clearly and use the notation 
accurately. Use brackets when they are required. Even if your final 
answer is wrong, you may earn some marks for a correct expression in 
your working. Do avoid silly answers Check that your final answer is 
sensible within the context of the question. Do make good use of time 
Choose the order in which you answer the questions carefully. Do the 
ones that are easiest for you first. Set yourself a time limit for a 
question depending on the number of marks available. Be prepared to 
leave a difficult part of a question and return to it later if there is
time. Towards the end of the exam make sure that you pick up all of 
the easy marks in any questions that you haven't got time to answer 
fully.

Don’ts

Don't work with rounded values There may be several stages in a 
solution that produce numerical values. Rounding errors from earlier 
stages may distort your final answer. One way to avoid this is to make 
use of your calculator memories to store values that you will need 
again. Don't cross out work that may be partly correct It's tempting to
cross out something that hasn't worked out as it should. Avoid this 
unless you have time to replace it with something better. Don't write 
out the question This wastes time. The marks are for your solution!