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This site has everything you need to supplement your course: notes, exam prep, IA tips, and activities. What I most love about this site is that the activities are all ready to go - the handouts, answers, and resources are all there for you. Not only...

Valerie Koch, International School of Zug and Lucern, Switzerland

I also HIGHLY recommend this website! It has loads of great, ready-to-use resources. The website is easy to navigate and easy to find material. The activities are creative and meaningful, encouraging greater understanding of the topics. I've subscribed...

Hellen Phan, International School Augsburg-ISA-gGmbH, Germany

Well thought out and designed tasks. Easy navigation. Quality materials for deep learning across all topics. Regularly updated and new materials added. Responds to feedback. AMAZING TIME SAVER! Never without a quality lesson or idea for a class.

Melissa Griffin, Phuket International Academy Day School, Thailand

 Blogmore

Percentage perception

Wednesday 14 December 2016

Many of you will have seen the activity on Percentage Perception and how it is used to explore data on our perception of how many people where... more

Picture this

Thursday 1 September 2016

Just sharing what I did today with one of my Mathematical Studies classes as a warm up exercise for the new term. We played a few rounds of... more

IB Americas

Sunday 31 July 2016

So I was lucky enough to be taken to the IB Americas conference with the 'inthinking' team a couple of weeks ago. We went to man an exhibition... more

Subscriber comments


  • 20 Jan Ken Stirrat
    Homicide Rates
    Hi Jim, Thanks for the additional material on the IA, very helpful. I also liked this IA, clearly a student enjoying their work. Just a quick question on B. As there is no raw data included, would this limit the candidate to a 1 ? ,,,and what...
  • 19 Jan Grant Fossum
    Marked Projects
    Thank you so much for adding these, it is great to have some new examples to look at. I love this site, but I do have an idea for consideration and I am trying to do as well. I think it would help to do a "fake" IA with students with pre-defined...
  • 19 Jan Grant Fossum
    Project Problems
    Hey Jim, So I love the blog, and my thinking is like yours; however I think that contradicts the IBO. In the examples they give if the r is low, they use chi. What do you advise students to do if their correlation coefficient is low? Here...
  • 19 Jan Jim Noble
    Marking & Moderation
    Great - always good to hear. I do use it every year!
  • 19 Jan Jim Noble
    Project Problems
    Hi Grant! Good question - One that comes up a lot. I have answered it before here in this blog post - at least I think that answers your question. Let me know - Thanks, Jim
  • 17 Jan Grant Fossum
    Project Problems
    I am having a fundamental issue with part of this project. I get that when the correlation coefficient is low they should not go further to regression, but what I don't get is why and how they should do chi squared. I am teaching AP stats...
  • I am thinking of how to use this as a great way not only to summarize 1 variable stats, but to help with IA. Could they group them, how would they group them, why. How would we handle gaps and various years. What would be great comparisons....
  • 2 Jan Elizabeth Heudebourg
    Marking & Moderation
    Hi Jim: Thank you for the spreadsheet! It is very helpful to keep all of my documentation in one place.
  • 8 Dec Katrina Kite
    Statistics Practice
    Hello, Though there is the text for it, there is no actual link to the answers for the Normal Distribution exercise handout. Thank you
  • 29 Nov Jennifer Hofman
    Meeting Functions
    It's the eight functions from the first activity, meeting functions.
  • 27 Nov Grant Fossum
    Meeting Functions
    On the presenting the functions activity, The directions refer to a list of functions, but I am not seeing a list ...just making sure was this attended to be with the three major functions (linear, quadratic, exponential) or is this for them...
  • 25 Nov Kristine Limbaco
    Student writing guide
    I second the motion. It will really be helpful to see guide for Math Project focusing on calculus, trigonometry, volumes of pyramids and cones, exponential functions and probability.