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Standard Level Mathematics

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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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

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

 Blogmore

Challenge Problems (#10)

Sunday 10 April 2016

To me - and to most people who enjoy mathematics - solving a problem that requires insight, perseverance and creative use of mathematical knowledge... more

Measuring the earth's radius 1000 years ago

Tuesday 10 November 2015

This past weekend I was reading a review of a new history book, The Silk Roads by Oxford historian Peter Frankopan, in which the reviewer states... more

Perplexing Pentagons (Exploration Idea #499)

Sunday 13 September 2015

Recently, a Maths SL student asked for my thoughts about her writing an Exploration (IA) on tilings of the plane (Euclidean tessellations).... more

Subscriber comments


  • 22 Feb Marilyn Garber
    descriptive statistics
    Please explain question #4 in the Descriptive Statistics 1 section
  • 22 Feb Marilyn Garber
    descriptive statistics
    Please explain question #4 in the Descriptive Statistics ! section
  • 15 Feb Tim Garry
    Sample Mock Exams
    Taha, Thanks for feedback. "Integral" can be an adjective which means "denoted by an integer", but I think you're right - better to have the word "integer" because of the other meaning of "integral" in calculus; possibly confusing for students....
  • 15 Feb Taha Anjarwalla
    Sample Mock Exams
    Hi Tim. Thanks for these new Mock Papers. These make my life a ton easier. I just wanted to point out a typo in MockB HL P1 2017. Question 4 asks to find 'a quadratic equation with integral coefficients'. I think you meant 'integer coefficients'....
  • 13 Feb Tim Garry
    Problem of the Day
    Agnes, Thanks for the positive feedback. Your solution for SL Problem 4 is certainly much simpler than mine. When writing the question, I was trying to come up with something that could apply conditional probability - so I was focused on using...
  • 13 Feb Agnes Clapp
    Problem of the Day
    Hi thank you for these problems - a great set of resources! An alternative, simpler solution for the 4th problem is to consider that if the oldest child is a boy then the first three will need to be boys for all of them to be boys, and the...
  • 13 Feb Tim Garry
    Sample Mock Exams
    Babette, Thank you. There were a couple of other errors in Mock B SL Paper 2. I've made corrections and have uploaded a version 3 for both the exam and markscheme above.
  • 13 Feb Babette Theil
    Sample Mock Exams
    There is another mistake in the table in question 3 - it must be x in months not x in years.
  • 13 Feb Babette Theil
    Sample Mock Exams
    Thank you very much for the sample Mock examination. I had the same problems as you mentioned in the email - students have uploaded past papers and prepared the Mock in this way. So now I am able to use the one from 2017 from you and Iam very...
  • 13 Feb AHU ZENGIN
    Calculus HL option
    This site helped me a lot for my first years in ib hl,but as time passes by i need to make an advice that past papers should be given in this site alo.
  • 12 Feb Tim Garry
    Sample Mock Exams
    Babette, thank you for bringing this error to my attention. For Q.9 part (c) on the Math SL Paper 2 mock (2017), it seems clear that I computed the interval within just one standard deviation, rather than one-and-a-half standard deviations...
  • 11 Feb Babette Theil
    Sample Mock Exams
    Hallo I think there is a mistake in the markingscheme of SL question 9 in 2017 Mock examination. The standard derviation is 7.8cm (calculated in a) Now students are aseked to calculate the range of accepted applicants which must be within 1.5...