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.



I highly recommend any IB Mathematics teacher who is seeking expert guidance on how best to teach either Standard Level or Higher Level Mathematics in today's classroom to subscribe to the InThinking website. It is an invaluable resource for both...

Mike Murray, Dubai American Academy, United Arab Emirates

I really like the continuously expanding InThinking Maths HL & SL resources. I always find something useful among the plentiful, practical, well-formatted resources - including notes, assignments, assessments, and interesting student pages. Absolutely...

Holly Garner, Lincoln Community School, Ghana

The InThinking Maths website is a very beneficial and user-friendly online guide for IB teachers. You can get an answer to all of your questions. There are all sort of materials and support, many samples of course designs, explorations, exams, teaching...

Şhenaz Tekin, FMV Erenköy Işik High School, Turkey

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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

  • 19 Sep Kalpana San
    Mock Exams
    Thank you Tim
  • 18 Sep Tim Garry
    Mock Exams
    Hi Kalpana, InThinking offers two IB maths sites. This one is for Maths HL & SL (and soon I will also be launching a site for the new Analysis & Approximations course SL & HL); the other site is for Math Studies (and the editors of that site...
  • 18 Sep Kalpana San
    Mock Exams
    Do we have any mock paper or practice paper for Studies??
  • 16 Sep Tim Garry
    new syllabus > new website
    Hi Anam, Thank you for asking. Work on my new site for Analysis & Approaches is progressing but taking longer than anticipated (especially while also teaching my own classes). I plan to launch by the end of the month. I believe the Applications...
  • 15 Sep Anam Manzoor
    new syllabus > new website
    Hi Tim, I hope you are well. Any update on the new websites?
  • Sure will try this question in my class. Thanks Tim.
  • Here is an interesting question for your students. Find any horizontal or vertical tangents to the graph of y=x^(1/3) [y=cube root of x]. There is a vertical tangent at (0,0) and the derivative is undefined at that point which makes sense since...
  • If we have a look at the expression of the derivative it explains all. As dy/dx=(3y-x^2)/(y^2-3x) we get dy/dx=0/0 at (0,0) which is undefined. This is a good question though. Thanks for sharing these resources with us. It's much appreciated....
  • Well, I doubt there would ever be an exam question like this b/c there is some ambiguity. Also, important to point out that x^3+y^3-9xy=0 is not a function; so, don't think formal limit definition of a tangent is going to apply. Strangely,...
  • Hi Tim, Thanks for your reply. Yes, I agree with the point you made. But in this graph if y=0 can be regarded as the tangent line then x=0 can also be counted as one. If so there must exist two tangent lines at one single point (0,0) which...
  • A tangent can intersect a graph - either at the point of tangency or elsewhere. For example the graph of y=x^3 has a horizontal tangent at (0,0) and some functions have tangents at inflection pts which intersect the graph. Thanks for your query.
  • Hi Tim, with Q3(b) on the same worksheet, I don't think the gradient exists at (0,0) as the proposed tangent line y=0 also crosses the graph at (0,0).