*InThinking*

Educational Consultants

Innovative

International

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

### Forthcoming Workshops

#### Mathematics: Application & Interpretation

IBDP Category 1

Lisbon, Portugal

8 to 10 November 2019

more info

#### Mathematics: Analysis and Approaches

IBDP Category 1

Lisbon, Portugal

8 to 10 November 2019

more info

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

### School visits

If you are interested in **Oliver Bowles**, **Jim Noble** & **Cornelia 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**

# Latest updates

### Volume and Surface Areafree15 September 2019

This section is all about the volume and surface area of prisms, cylinders, pyramids, cones and spheres! All of these shapes has their own unique properties and this section is about understanding and... more

### Site Updatesfree15 September 2019

Get a detailed summary of every change and update here.One of the major advantages of web based resources must be that they remain dynamic. Whilst I hope there is already a significant amount of very... more

### G & T Practice15 September 2019

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

### Unit1-Financial Mathematics & Introduction to Modelling Techniques9 September 2019

Compound interest (S1.4), makes a good introduction as many students will be familiar with it (even though it is not listed in the prior learning) from their pre-IB years mathematics courses. This can... more

### HL Coefficient of determination (R²)5 September 2019

This topic follows on from Pearson's (r) Limitations and SL Spearman's Rank. To choose between competing mathematical models we need some measurement of their success in predicting the observed data. more

### HL Coefficient of determination - Exam Qu4 September 2019

The following exam style questions aim to give you an idea of what you can expect for this topic in your exams. You can print the page by choosing 'print this page' from the menu on the rgiht OR you can... more

### HL Coefficient fo determination - practice4 September 2019

The following practice questions are focused on checking, and developing, your understanding of the key ideas on this topic. You can print the page by choosing 'print this page' from the menu on the right... more

### Logarithms-Conceptual Beginnings+IA ideas29 August 2019

Have you worked it out yet: 984 876 543 210 x 875 622 375 933 ? Compare methods in the class - have we all used the same method? Now compare your answers, are they all the same?Most people tend to make... more

### Aircraft - Exploration marksfree22 August 2019

The difference between the marks below and the 'Project' marks can be explained, and relatively easily improved, by addressing the points mentioned in the 'Writing a Studies style project with the Exploration... more

### Gun Crime - Exploration marksfree22 August 2019

This project provides a useful example of the below key differences in the current exploration marking criteria compared to the Studies Project. B - Mathematical communication(i) predictions using a greater... more