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Textbooks for Mathematics HL and Mathematics SL

Textbooks for Math HL and Math SL. Two textbooks written by Tim Garry and Ibrahim Wazir that are fully revised 2nd editions providing comprehensive coverage for the new 2014 syllabuses. Each textbook comes with an e-book (accessed through a website) containing a complete digital copy of the text along with numerous additional material.

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Tim's InThinking site has been invaluable to me as a new IB teacher. Before starting any new syllabus item, I use the site to gain a better understanding of the types of problems that my students need to be able to solve. It has helped me to format...

Katherine Young, Cologne International School, Germany

I love the "accessible" to "discriminating" levelled questions. They are great for differentiation in the classroom - especially as time in the IB classroom is so precious. Students start work at their own comfort level, discuss in...

Catherine Cooke, St John's International School, Belgium

I highly recommend that HL teachers use your site. I am still amazed at all it has to offer. The wealth of material has made it so much easier for me to provide my students with problems that will help them learn any thing from the basics to accepting...

Wallis Green, Khartoum International Community School, Sudan

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Problem: find exact ratio of areas

1 September 2019

Here is a problem that I thought up (probably has appeared somewhere before but I have not seen it) which is presented in the GeoGebra applet... more

Probability - Complement Approach

1 June 2019

Question: Two fair six-sided dice are rolled. What is the probability that at least one of the dice shows a five facing up? more

Subscriber comments


  • 14 Oct NORAZILA RAMLI
    exp & log functions & eqns
    Thank you very much for your feedback. I really appreciate it.
  • 11 Oct Tim Garry
    exp & log functions & eqns
    Hi Norazila, Thanks for your query - a good one. I must admit that Q.3 on the SLHL exponential modelling exercise set is not well constructed (I need to make some changes to it). The answers for 3(a) were computed by using the model population=175(1+0.8)^t,...
  • 11 Oct NORAZILA RAMLI
    exp & log functions & eqns
    Hi, i would like to know if anyone already try this set of questions exercise set 2-6(4)-25v2 SLHL (for Question #3). I tried quite a few times on questions #3(a)(iii) and #3(a)(iv) but I did not get the answer given in the solution key provided. I...
  • A very nice problem that would be great to use any time but especially during the study of trig.
  • 8 Oct Jarod Martin
    HL Problem of the Day
    Thank my student!! He is the one who caught it. I made the same mistake! Thanks for your site. You are truly helping me out.
  • 7 Oct Tim Garry
    HL Problem of the Day
    Hi Jarod, You're absolutely correct. I should have specified that m cannot be zero; or at least said it had to be a quadratic equation which would have implied that. I've corrected the wording of the instructions for HL Problem 48. Thanks for...
  • 7 Oct Jarod Martin
    HL Problem of the Day
    In problem #48 do we have to exclude m=0 from the beginning? If m=0 then there will only be one real solution.
  • 6 Oct Tim Garry
    HL Problem of the Day
    Hi Kenneth, Thanks for positive comment and pointing out the broken link. It should be working now. cheers, Tim
  • 6 Oct kenneth mcpherson
    HL Problem of the Day
    Hi Tim. The link for PoD#63 appears to be broken. Thanks for all the hard work you do.
  • 3 Oct Tim Garry
    new syllabus > new website
    Hi Henrry, Thanks for message. Please see note at top of this page that I wrote yesterday. Site coming soon. cheers, Tim
  • 3 Oct Henrry Kutesa
    new syllabus > new website
    Hi is the new site for the new course ready now. I don't see much information on my page. It is said that it will should have been released by September. But still now I don't get to see much for the new course. please help
  • A valuable exercise as the students can quickly check their understanding.