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Forthcoming Workshops
Mathematics: Implementing the MYP curriculum
IBMYP Category 1
Berlin, Germany
3 to 5 November 2017
more info
Mathematical studies SL
IBDP Category 2
Barcelona, Spain
16 to 18 February 2018
more info
Mathematics SL
IBDP Category 2
Barcelona, Spain
16 to 18 February 2018
more info
Find all InThinking Workshops at www.inthinking.net
Site Author
Tim Garry is the site author and has taught mathematics from middle school to university since 1984 and been Head of Maths at three international schools. He's also been an IB examiner for external & internal assessment, contributor to IB curriculum reviews & Maths HL exam writing teams, delivered numerous workshops & coauthored IB maths textbooks (see below).
moreQuote 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.
Home2Home
The vacation home exchange service for the IB community.
Feel at home when you travel the world.
www.home2homeinthinking.co.uk
Problem of the Day
There are currently 176 problems (88 SL + 88 HL) with more problems added every week. There are separate pages for the SL Problem of the Day and for the HL Problem of the Day HL Problem of the Day #88 There are two growing sets of 'problems' (one for SL and another for HL) with one new 'problem' added nearly every day to each set (along with a worked solution)....
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...
Great site. Dense with great ideas and useful printable student material. It has added an extra dimension to my teaching and given me several successful plan B options. Well done Tim.
Blogmore
Problem: 12 circles circling a circle
28 August 2017
Early in the school year, I like to offer my firstyear IB maths students  especially HL students  some challenging problems. I like creating... more
P.o.t.D.  150 Problems !
30 July 2017
Over the past six months, I’ve toiled away at composing problems to add to my two Problem of the Day lists – one list of problems for Maths... more
Challenge Problems (#10)
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
Subscriber comments

It is so wonderful to see examples such as this that connect other subjects with Maths. My students enjoyed looking at your challenging puzzles after they had finished the course. In future I will incorporate some of them in my normal teaching....

Jim, Thanks for feedback. The answers given on the Vectors 3D ex set for 8 (b) were incorret. Thanks for spotting that. I've corrected them (version 2 uploaded)  and I have also uploaded a full set of worked solutions for all 10 exercises...

Hi, Wondering if you have got full solution to the first exercise: EXS_4320v1_HL_vectors_3D Not sure about Question 8b. Thanks!

Awesome! Thanks Tim!

The HL syllabus just mentions asymptotes and does not specify horizontal, vertical or oblique. I assume, because the functions given are both linear, oblique asymptotes will not be included in exam questions. Can anyone confirm?

Is it blank?

Hi Tim, This is very impressive! I like the differentiation you have done in this test. Thanks. Wilfred.

SL Differentiation Test 1  and worked solutions for it  have now been uploaded

Chris, Thanks for the query. I'll do my best to have it uploaded by start of next week.

Hi Tim, Can you tell me when the SL Differentiation Test 1 will be uploaded? Thanks, Chris

Thanks! Got it!

Shalini, Sorry for slow reply. Below the 'curve sketching' question I've provided a link to a document with a solution.