Below I’ve chosen a very small selection out of several hundred resources on my intermathematics.com site. Hopefully this is enough to get a flavour of the type of content available!
1. Worksheets
All worksheets are designed to take 40 mins to 1 hour and can be used very effectively as homework sheets or classroom activities. Worksheets are designed to hit key syllabus points and have full worked solutions.
Integrating factor worksheet:
This worksheet is designed for syllabus point AAHL 5.16. Download WS and MS here.
2. Treasure hunts
All treasure hunts are designed to take 20-30 minutes and to be a classroom based activity. Students can either work in pairs and rearrange papers on their desk, or a single set can be placed around the room. Students have to link up the questions with the correct answers.
3. Enrichment investigations and explorations
These are all worksheet led activities which can be done to both gain a deeper understanding of syllabus ideas and also to provide stimuli for possible coursework ideas.
4. Paper 3 investigations
I’ve made over 35 Paper 3 investigations – some of these are designed specifically for HL maths students to help prepare for their Paper 3s, and others are a bridge between Paper 3s and excellent prompt ideas for how good coursework ideas could progress. All of these aim to introduce some new ideas or place syllabus ideas into real life contexts.
5. Mock examinations and unit test
I won’t share the unit tests and mock exams for obvious reasons! I have tried very hard to make these look and feel like “real” IB exams – by using a similar layout and creating realistic exam style questions.
Mock examinations
An example of the question formatting: 
Unit tests
An example of the front page:
6. Enrichment resources
There are also a lot of enrichment resources – from Maths EE support, TOK in Maths, Stocks and Shares competition, Maths and Python, Codebreaking and a lot more.
Codebreaking Pack
This is the 2023 FOBISIA Maths Codebreaking challenge. Full of codes! Download here.
Hopefully this gives an example of the types of resources on the site – there are several hundred of these resources on the site! If you would like to join please visit the site here.
Other useful resources:
Starter puzzles
1. Square Dance
For the unit square shown above with vertices at (0,0), (1,0), (0,1) and (1,1), how many different types of functions can you find that go through at least 2 points? You can download a pdf solution here.
2. Message in the logs
A nice activity for Christmas time – can students find the hidden message? You can download a pdf solution here.
3. Make 2023
Using the numbers in order, the standard arithmetic operations and brackets, can you make the number 2023? You can download a pdf solution here.
4. Decidedly average
In the grids, each blank square should be filled with the mean of the two numbers in adjacent squares. You can download the solution pdf here.
5. Circular logic
Find the area of the shaded shape when the radius, r, of the original circle is 1. You can download a pdf of the solution here.
6. The sum of 3 cubes
How many of the numbers from 1-20 can you form as the integer sum of 3 cubes? You can download a pdf of the solution here.
7. A reciprocal sum
This is a good introduction to more formal mathematical techniques for finding upper/lower bounds for functions – and also in working with generalized functions. The pdf solution can be downloaded here.
8. Hunting integers
How many values of n give an integer answer? You can download the pdf answer here.
9. Disappearing fractions
What is the value of the above product? You can download the pdf solution here.
10. As smart as Pythagoras
Can you use the diagram, with squares ABCD and EFHG to discover Pythagoras’ Theorem? You can download the pdf solution here.
11. The million dollar maths problem
“Every even integer greater than 2 can be written as the sum of 2 prime numbers.” How many solutions can you find? Prove it and enter the mathematical history books! You can download a pdf of the solution here.
12. Time dilation
Students calculate the effects of time dilation in one of the most amazing mathematical discoveries of all time. You can download a pdf of this solution here.
13. A Penny for thoughts
What is the value of R/r for the model of the Penny Farthing? You can download a pdf of the solution here.
14. On reflection
Can students reflect the graph of y = x^2 around a straight line? You can download a pdf of the solution here.
Analysis SL/HL
1) The Analysis and Approaches formula book for SL and HL. (Reworked and in a beautiful one page format).
2) Full Analysis and Approaches lecture notes from Christos Nikolaidis. (Extremely comprehensive and well written).
3) A beautiful mind-map for the entire Analysis and Approaches SL course produced by the IB.
4) A fantastic 55 page pdf for Paper 3 Investigations from IB teacher Daniel Hwang – these are pretty challenging – great for Level 6/7 HL students!
5) Full Analysis course notes from Mac Maths. Beautifully handwritten notes.
Applications SL/HL:
1) The Applications and Interpretations formula book for SL and HL. (Reworked and in a beautiful one page format).
2) Full Applications and Interpretations lecture notes from Christos Nikolaidis. (Extremely comprehensive and well written).
3) A beautiful mind-map for the entire Applications and Interpretations SL course produced by the IB.
4) Full Applications course notes from Mac Maths. Beautifully handwritten notes.