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Forthcoming Workshops
Mathematics: Delivering the MYP Curriculum
IBMYP Category 2
Berlin, Germany
15 to 17 March 2019
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Mathematics: Implementing the MYP curriculum
IBMYP Category 1
Berlin, Germany
8 to 10 November 2019
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Quote of the day
Many who have had an opportunity of knowing any more about mathematics confuse it with arithmetic, and consider it an arid science. In reality, however, it is a science which requires a great amount of imagination.
(Sofia Kovalevskaya, 18501891)
Resources
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 ebook (accessed through a website) containing a complete digital copy of the text along with numerous additional material.
School visits
If you are interested in Tim Garry visiting your school to work with teachers and/or students, please contact us.
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Recommendationsmore
I really like the continuously expanding InThinking Maths HL & SL resources. I always find something useful among the plentiful, practical, wellformatted resources  including notes, assignments, assessments, and interesting student pages. Absolutely...
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...
The InThinking Maths website is a very beneficial and userfriendly 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...
Blogsee all
what is path of midpoint of a falling ladder?
24 November 2018
Something which I think that is often not emphasized or valued enough when teaching mathematics is encouraging students to visualize a graph,... more
Effective GDC Use #3
17 November 2018
Concerning effective GDC use, I try to avoid giving my students the impression that mindlessly pushing buttons on a GDC will allow them to successfully... more
Subscriber comments

Omolade, Thank you for bringing that to my attention. Both of the syllabus links are now fixed.

The HL syllabus link is broken.

Michael, No, not a requirement; but advisable in my opinion. I think it's good practice to have at least 1.5 spacing, and mathematics generally looks better in a nonsans font like Times New Roman. Also, there has been many comments in recent...

Hi Tim, Is the font size 12, Times New Roman, 1.5 spacing a requirement? I've seen no mention in any guides from the IB. Thanks.

William, Thanks for feedback. Yes, you're right if you subtract the two pairs of terms in different order  i.e. u1u3 and u4u2 (or u1u3 and u2u4). In my solution I thought it was necessary to subtact in same order  i.e. u3u1 and u4u2...

Hi Tim, For HL problem #102, the sequence can be oscillating with r < 0. In this case, a = 27/4 and r = 1/3 also satisfy the conditions of the question, and give the sum = 81/16.

Got it! Brilliant! Thank you.

Omolade, No  this question was Q.5 on May 2018 TZ1 HL Paper 1 (No calculator). The key to solving had more to do with recognizing that it's quadratic in terms of lnx than with logarithms. Bit tricky

Thank you for replying Tim. :) I am new to teaching IB Maths HL. I guess that question (lnx)^2(ln2)(lnx)

Omolade, Thanks for your question. Not sure if you were asking about HL or SL. For HL the answer is "yes", for SL "maybe". HL syllabus item 2.7 indicates that students must be able to solve an inequality that could involve a range of different...

Are students required to know how to solve inequalities involving logarithmic functions?

Garrett, Certainly getting answers for parts c & d to Q.6 on EXS_exponential_modelling worksheet above is trickier. I've displayed above (below teaching materials) a scrollable pdf showing my solution for Q.6 part (c). Same approach can be...