InThinking Subject Sites
Subscription websites for Cambridge IGCSE teachers & their classes
Most popular
Getting started
Teaching Resources for Secondary Mathematics
This website is designed to help teachers provide a rich and engaging mathematical experience for their students as they learn and think about secondary mathematical ideas and concepts no matter what...
4 October 2023
Assessment
Question bank
All of the questions (over 350 questions representing over 2000marks worth (as of 14th November 2023, and more available every week!) are NOW AVAILABLE, including the NEW NON-CALCULATOR questions. They...
22 November 2023
Trigonometry
Sine Rule – Using a Theodolite
'Get some experience working as a Surveyor!' If you have ever seen a couple of people working like the two men in the photograph opposite then you have probably wondered what they are doing. One is...
1 August 2022
Geometry
Human Loci Free
'Take the classroom outside and explore Loci interactively''A set of students that all obey a given rule', that is what human loci is all about. Before working on points and shapes, this activity asks...
6 March 2024
Number
Operations, Multiples & Factors Free
The following activities are all designed to help teachers engage their students with these key ideas. The activities cater for a range of students and many of them can be used in different ways at different...
7 January 2024
Trigonometry
Trig Calculator
'Make your very own trig ratio calculator!'When you input sin 30 on your calculator you should get 0.5Careful to make sure calculators are set to degrees and not radians.Have you ever wondered what your...
18 October 2023
Trigonometry
Right Angled Trigonometry
The following activities are all designed to help teachers engage their students with these key ideas. The activities cater for a range of students and many of them can be used in different ways at different...
2 September 2023Trigonometry
Non right-angled Trigonometry
The following activities are all designed to help teachers engage their students with these key ideas. The activities cater for a range of students and many of them can be used in different ways at different...
2 September 2023
Geometry
Properties of 2D & 3D Shapes
The following activities are all designed to help teachers engage their students with these key ideas. The activities cater for a range of students and many of them can be used in different ways at different...
2 September 2023
Algebra and Graphs
Functions & Modelling
The following activities are all designed to help teachers engage their students with these key ideas. The activities cater for a range of students and many of them can be used in different ways at different...
2 September 2023
Getting started
Scheme of Work (0580)
Below is a suggested scheme of work for sequencing the syllabus.The earlier units 1, 2A, 2B, 3 etc ensure that students have the skills required by later modules e.g. unit 6, 7, 8 and 9.The below Scheme...
30 August 2023
Trigonometry
Sine Cosine: Triangle, Circle, Wave!
If you haven't been on a Ferris Wheel yet, you've probably seen one. Close your eyes, picture yourself 90m off the ground, level with the main axel of the Singapore Flyer, the world's largest Ferris Wheel...
1 August 2022
Getting started
Projects - Thinking Virtual Free
This is one of my favourite things to do in the year. It is quite a long project that involves the creation a 'fairground game' that is designed to have a 'One in three' chance of winning. When we do...
18 October 2023
Statistics & Probability
World Village Free
'If the world was a village of 100 people....'This page is about a joint project done with the mathematics and geography departments and involving primary and secondary students at the International School...
18 October 2023
Mensuration
Prism Volumes
It is essential that you do not confuse surface area with volume. To confuse the two is like confusing weight with height - they are measures of completely different things. It's the sort of confusion...
4 October 2023
Assessment
Need an end of unit revision pack? A practice set of questions to accompany a lesson? A homework task? etc. Want to only share the questions with students? Questions and answers? Questions and fully worked...
3 September 2023
Statistics & Probability
Wisdom of the crowd
Give us 5 minutes of your time. Watch the videos below and fill in the short questionnaire with your guesses below! Get the live data for yourselves! We've all played 'Guess how many sweets there are...
2 September 2023
Vectors and Transformations
Vectors & Transformations
The following activities are all designed to help teachers engage their students with these key ideas. The activities cater for a range of students and many of them can be used in different ways at different...
2 September 2023
Trigonometry
Trigonometric Functions
The following activities are all designed to help teachers engage their students with these key ideas. The activities cater for a range of students and many of them can be used in different ways at different...
2 September 2023
Trigonometry
All Activities Free
On the other pages in this section we have divided our activities in to sub-topics. This page has them all together in one place for browsingTime: 1-2hrs Proof is a hugely significant part of mathematics....
2 September 2023