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**Disclaimer**:
*InThinking* subject sites are neither endorsed by nor connected with
the International Baccalaureate Organisation.

### Forthcoming Workshops

#### Mathematics SL

IBDP Category 1

Barcelona, Spain

6 to 8 October 2017

more info

#### Mathematics HL

IBDP Category 2

Barcelona, Spain

6 to 8 October 2017

more info

Find all *InThinking* Workshops at www.inthinking.net

### School visits

If you are interested in **Oliver Bowles** & **Jim Noble** visiting your school to work with teachers and/or students, please
**contact us**.

### Home-2-Home

The vacation home exchange service for the IB community.

*Feel at home when you travel the world.*

**www.home2home-inthinking.co.uk**

# Most popular

### Sets of Numbers23 August 2017

'Classify these numbers and decide what makes them different and what they have in common!'What makes two numbers different from each other apart from their value? Are fractions and decimals really different... more

### Focus - Sets of numbers26 September 2016

This topic is about the the 4 key sets and subsets of our number system. This as fundamental bit of mathematics that can be easily lost if not covered properly. Students need to explore the notion of... more

### Focus - Arithmetic Sequences26 September 2016

Arithmetic sequences, those where each term differs from the previous by the same common difference, are a key conceptual element of the course. Strongly linked with linear growth, this important idea... more

### Percentage Error23 September 2016

'Percentage Error - Wrong, but how wrong? How do we judge the significance of an error?'Given that the vast majority of descriptive numbers are rounded and/or estimated its really worth stopping to think... more

### G & T Practice29 September 2016

This page has a variety of tasks designed for practise and revision. Practice questions are an important part consolidating students' understanding of a concept. They can be found from numerous sources... more

### L, S & P Practice27 September 2016

This page has a variety of tasks designed for practise and revision. Practice questions are an important part consolidating students' understanding of a concept. They can be found from numerous sources... more

### Focus on - Geometric Sequences26 September 2016

The Geometric sequence is a fundamental bit of mathematics that is an inherent part of exponential growth and decay. Their properties are simple in nature but they are often counter intuitive. The key... more

### Exactly22 September 2016

'Explore the role of estimation and rounding in our society - Leading to significant figures'Numbers are a crucial descriptive tool that surround every aspect of our daily lives. How many of the numbers... more

### N&A Teaching ideasfree22 September 2016

Here you should find a wealth of resources that can be used by you and your students for teaching this topic. The resources at the top of the page are activities and investigations aimed at creating a... more

### Number & Algebra22 September 2016

'A guide for for teaching! Ideas and resources and lessons to look forward to'This page is good for the 'Number and Algebra' units from both the new and previous syllabi! There is also a sub-section for... more

### Focus on - Quadratic Models3 October 2016

Quadratic functions are those in the form f(x) = ax2 + bx + c, and have fascinated mathematicians for centuries. They have some fundamental properties that will explored in this unit. Probably the best... more

### Statistics Practice27 September 2016

This page has a variety of tasks designed for practice and revision. Practice questions are an important part consolidating students' understanding of a concept. They can be found from numerous sources... more

### Big & Small Numbers23 September 2016

'What is the biggest number you know? What is the smallest? How can we work with such extreme numbers?'Mathematics knows few limits! We can go on and on describing even bigger and even smaller numbers... more

### Visual Sequencesfree23 September 2016

'Get out the multilink cubes and literally build an understanding of arithmetic sequences'Build a visual representation of the sequence 1, 5, 9, 13. What does it look like? What have your colleagues build?... more

### Functions Practice3 October 2016

This page has a variety of tasks designed for practise and revision. Practice questions are an important part consolidating students' understanding of a concept. They can be found from numerous sources... more

### In The Money23 September 2016

'Seconds to make up your mind! - Have fun with this hypothetical problem of sequences'A long lost relative wants to share their fortune with you! There are 4 different options about how to receive your... more

### Focus on Probability18 July 2017

Possibly the most relevant, useful and appropriate part of any mathematics course in schools! Everyone has an intuitive understanding of probability at its most simple level, but it is amazing how short... more

### Paper 110 October 2016

A bullet point description of paper 1The following outlines how accuracy is examined to the best of my understanding. A new ruling on accuracy was brought into play in November 2011. A principle reason... more

### Financial Mathematics26 September 2016

This is one of the most obviously relevant parts of the course and from my experience, students show an appreciation for that. That said, very few students are actually involved with borrowing and investing... more

### The 6 million questionfree17 September 2017

Big numbers present us with a real challenge! How do we understand their size and the significance of what they represent? Once numbers get past a certain size this gets harder and harder. One, two, three,... more

### Focus on Sets29 March 2017

Sets, subsets, intersections and so on. Sets are a mathematical way of classifying objects by means of clear definitions. Any given object has a number of properties that can be sued to classify it and... more

### Student writing guide5 October 2016

This section offers students advice and guidance for writing their projects. This can be tricky for teachers. We have to walk the fine line between offering students constructive and supportive advice... more

### Meeting Functions29 September 2016

'Get to the heart of what functions are about by matching these inputs, equations and outputs together - a 'simple' matching activity!'Its easy to study functions at this level and forget what they are... more

### Dr Who23 September 2016

'Recreate this space age animation to discover the mathematics behind it!' This task is really easy to explain! Watch the videos below and try to recreate them using dynamic geometry software. Of course,... more

### About IA5 October 2016

This page is intended as a a brief guide to the IA process and the paperwork you should have to hand for planning and running it. This will be most appropriate for those new to teaching the course, but... more

### Percentage Perception22 September 2016

'What do these errors in perception really tell us?'Think about the country you live in. For every 100 people that live in your country, how many of them do you think are Muslim? How many are Christian?... more

### N & A Internet Guidefree24 July 2012

This page is intended to list and outline some of the best resources available online to support the teaching and learning of this module. These will mostly be videos, virtual manipulatives and articles.... more

### Calculus Practice4 October 2016

Practice questionsThis page has a variety of tasks designed for practise and revision. Practice questions are an important part consolidating students' understanding of a concept. They can be found from... more

### New Curriculum(2019): Applications17 September 2017

The April 2017 IB release describing the new curriculum shows two new mathematics courses for which the Standard level course is, as for most other IB subjects, a subset of the Higher level course. more

### Box plots - why?26 September 2016

What is in a bunch of numbers? What stories do the numbers tell? It all depends on the way we look at them! Probably, we all have different instincts about what we might do with a given group of numbers.... more

### Schemes of Work19 September 2016

How and where to fit this course into the time allowed is a constant concern for most teachers. If you are an experienced teacher of Maths Studies then you have probably arrived at numerous versions of... more

### Resources for Revision10 October 2016

Obviously this is a crucial part of any exam program and over the year I have tried lots of different ideas. On this page you will find ideas about when and how revision can be offered and some recources... more

### Focus on Calculus Concept4 October 2016

This is the first of three sections on differential calculus. This is significant branch of mathematics with lots of applications. It builds very nicely on other concepts in the course and those you are... more

### Web Venns27 September 2016

'What makes a good venn diagram?'Not surprisingly, the internet is full of Venn diagrams. They range from Highly complex to just plain funny with all sorts of categories in between. This page is really... more

### The Normal Distribution7 August 2017

The normal distribution is a fascinating, naturally occurring phenomenon that has very relevant applications to understanding the world around us. When a data set is normally distributed it has some key... more

### Focus on SOHCAHTOA18 September 2016

This part of trigonometry can be seen in the recurring relationships between the sides of right angles triangles. The relationship means that we can use two bits of information about a triangle to work... more

### Project Inspiration6 October 2016

The idea of a Mathematical project or investigation is something that always really excites a lot of Maths teachers, but often Maths Studies students need a little bit more persuasion to get excited.... more

### Managing Projectsfree5 October 2016

This page offers a number of management strategies for teachers and students for the planning and completion of a good Internal Assessment project in a sensible time frame. When should students start... more

### Focus - Chi Squared26 September 2016

The chi squared independence tests is a widely used technique for looking for a relationship between variables that are categorical. We can use a scatter graph to look for a relationship between GDP and... more

### Frequency Distribution Match26 September 2016

In order to think about the properties of a ‘Normal’ distribution, it is probably important to consider the whole notion of a statistical distribution. In this activity, we will do just that! The... more

### Arithmetic Sum23 September 2016

'Use cubes to do a lovely proof of the sum of an arithmetic sequence!'You need to know how to use and apply the formula for the sum of an arithmetic sequence but here you can go one better by understanding... more

### Geometry & Trig29 September 2016

'A guide for for teaching! Ideas and resources and lessons to look forward to'This page is good for the unit with this name in both the new and previous syllabi!This is a big, key topic in the syllabus... more

### Focus - Cumulative Frequency26 September 2016

This topic is all about these two related tools for helping us look at how a data set is spread out. Learn about filling in cumulative frequency tables, plotting the corresponding curves and using the... more

### Scattertastic15 August 2017

'Use the power of these virtual manipulatives to play with the ideas behind scattergraphs, correlation and lines of best fit.'The study of statistics at school is a great opportunity to show mathematics... more

### Focus on Non-right angle trigonometry17 November 2016

Here we take trigonometry to the next level by working with triangles that do not have a right angle. We will work on three key rules. The Sine rule, the Cosine rule and the formula for th area of a triangle.... more

### Probability Treesfree27 September 2016

'Use what you already to know to see just how and why probability tree diagrams work'Probability is a topic that moves very quickly from that which is easily understood and intuitive to something seemingly... more

### Independence Day26 September 2016

'Is political persuasion dependent on Gender? How can we tell - an introduction to independence tests'When two data sets are numerical we can look for correlation using scatter graphs and linear regression... more

### UK Number ones26 September 2016

'What has changed about popular music in the last 60 years? - a mini project'Anyone who likes their music will want to look at this database and test out their theories on how popular music has changed.... more

### Pre - Course Task20 September 2016

'Get students thinking about mathematics and statistics before they start the course'I have often wondered about what would make a good pre-course task for Mathematical Studies students. HL and SL is... more

### About Maths Studies3 December 2014

Mathematical studies is one of the the Mathematics courses available for students in group 5 of the IB hexagon. It is a standard level course and as such is weighted equally with Mathematics SL (Standard... more