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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

This site is very helpful for students and useful for teachers ,I used the worksheets and questions a lot in my teaching studies,all ideas about internal assessment also are meaningful and students can benefit from them.

Sana Saeed, Modern Knowledge Schools, Bahrain

Subscriber comments


  • 19 Nov Jan Herchold
    Financial Mathematics
    I'm not seeing a link to the page of activities and ideas.
  • 18 Nov Jodi Whillier
    Exponentials & Logarithms practice
    Hi Jim - for the last question, should the units be in weeks rather than days (according to your solutions)? Thanks
  • 17 Nov Oliver Bowles
    SL Amortization and Annuities
    Thank you Iakovos for the feedback. I've checked the calculations and quickly double checked with an online amortization calculator and get the same answers as given on this page. To verify: it's a 240 000 loan, for 20yrs, with P/Y and C/Y...
  • 6 Nov Iakovos Christoforidis
    SL Amortization and Annuities
    answers to questions 1b/c are wrong
  • 4 Nov Stephanie Hecke
    Focus on Probability
    Thanks for the excellent material. Are there solutions to the worksheets?
  • Well spotted - corrected now, thank you
  • 18 Oct Erika Levenson
    Number & Algebra
    Is there a HL level of Applications and Interpretation with material provided? Thanks
  • 10 Oct Omolade Kadiri
    N & A Practice
    Yeah I didn't see currency conversion in the AI subject guide either.
  • 5 Oct Lilia Myszkowska
    Exponentials & Logarithms practice
    Hello! Could you please check: 1m: (4^2)^3=2^m? The answer is 12 or? Thanks.
  • 3 Oct Sarah Thomas
    G & T Practice
    Error on gradient answer sheet....page 2 and #2.
  • Sorry Jodi, missed this comment. Yes still Ok, but maybe not the best choice? Check out the page on GDCs under new syllabus.. Thanks, Jim
  • Hi Nicola, sorry, should be OK now, thanks, Jim