Download our brochure


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

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


Some fun with primes ... and Geogebra

18 January 2018

Prime numbers are fascinating, mysterious and useful. The topic of prime numbers can pop up in a maths lesson at many different ages and ability... more

primitive Pythagorean triples

30 December 2017

Over the years, I’ve got the impression that students are as fascinated with Pythagorean triples as they are with prime numbers. Many mathematical... more

Problem: 12 circles circling a circle

28 August 2017

Early in the school year, I like to offer my first-year IB maths students - especially HL students - some challenging problems. I like creating... more

Subscriber comments

  • 19 Jan Chris Holland
    probability of events
    Hi Tim, are there any quizzes available for SL?
  • 16 Jan Tim Garry
    Sample Mock Exams
    Patrick, I'm in the process of composing HL mocks P1 & P2 (set C). Are you looking for HL or SL, or both? Thanks for query, Tim
  • 16 Jan Patrick Sekyi
    Sample Mock Exams
    Hi Tim, Is 2018 mock exam coming up shortly on this site? It's cool using one from you.
  • 12 Jan Tim Garry
    complex numbers (HL)
    Jo, Very well-spotted. Yes, that's an error. I've corrected 3(b) - and uploaded the corrected version. Thanks for your helpful feedback.
  • 12 Jan Joanne Cooper
    complex numbers (HL)
    Hi Tim, In the denominator of 3b, it should be (tan x)^4, not 4 (tan x)^4 Hope this helps, Jo
  • 11 Jan Yildiz Yucel
    Euler's identity
    Thank you so much.
  • 11 Jan Tim Garry
    Euler's identity
    Yildiz, Regarding Euler's formula/identity, please see the last brief section I just added to this page. It is certainly possible that something involving Euler's identity / complex #s could be a useful topic for an HL student's Exploration...
  • 11 Jan Yildiz Yucel
    Euler's identity
    Dear Tim, I want to confirm that whether e^(iQ)=cosQ+isinQ is Euler's formula or Euler's identity. And also, after seeing the real life application of this identity, would it be a good IA topic to search the useful mathematical applications...
  • 10 Jan Tim Garry
    Sample Mock Exams
    Alex, Excellent question. To reduce each of the HL mock A exams from 120 to 100, I would do the following. P1: remove Q.3 [there are other Qs on complex #s]; remove Q.5; remove Q.12 part(c) [inflexion pt on P2]; remove Q.13 partA, parts (c)...
  • 8 Jan Alex Bates
    Sample Mock Exams
    Hi Tim, I would like to give my students a new style HL paper (i.e. with just 100 marks on it) and have already given them your mock B. I note that the mock A's have 120 marks and wondered if you have any advice on which questions you think...
  • 31 Dec Tim Garry
    Euler's identity
    Yildiz, Sorry for slow reply. Good question. Euler's identity allows us to convert from polar form, r(cisA), to the form re^iA (A is the angle), and back - which can be helpful for some computations. See 3-page document at following URL that...
  • 26 Dec Yildiz Yucel
    Euler's identity
    Thank you very much. Any real life application for this identity?