Numbers
This unit will help you understand more about real numbers and their properties. It will explain the relationship between real numbers and recurring decimals, explain irrational numbers and discuss inequalities. The unit will help you to use the Triangle Inequality, the Binomial Theorem and the Least Upper Bound Property. First published on Wed, 2
Author(s): Creator not set

The content acknowledged below is Proprietary (see terms and conditions) and is used under licence.

All materials included in this unit are derived from content originated at the Open University.

Author(s): The Open University

This unit explores a real-world system – the Great Lakes – where mathematical modelling has been used to understand what is happening and to predict what will happen if changes are made. The system concerned is extremely complex but, by keeping things as simple as possible, sufficient information will be extracted to allow a mathematical model of the system to be obtained.

This unit is an adapted extract from the course Author(s): The Open University

Just as we usually take for granted the basic arithmetical operations with real numbers, so we usually assume that, given any positive real number a, there is a unique positive real number b =  such that b2 = a. We now discuss the justification
Author(s): The Open University

## Exercise 29

In this exercise, take

Author(s): The Open University

You may have met complex numbers before, but not had experience in manipulating them. This unit gives an accessible introduction to complex numbers, which are very important in science and technology, as well as mathematics. The unit includes definitions, concepts and techniques which will be very helpful and interesting to a wide variety of people with a reasonable background in algebra and trigonometry.

This unit is from our archive and is an adapted extract from Complex analysis (M33
Author(s): The Open University

## Audio Materials

These extracts are from M208 © 2006 The Open University.

All material contained within this unit originated at The Open University.

Author(s): The Open University

Scientific notation can be very useful when estimating the answers to calculations involving very large and/or small decimal numbers.

## Example 9

A lottery winner won £7851 000. He put the money straight into a deposit account which earns 7.5% interest per annum (i.e. each year). If he wanted to
Author(s): The Open University

8.6 The Dakshineswar temple

I want you now to follow a worshipper on a ‘pilgrimage in miniature’ around Dakshineswar temple on the outskirts of Calcutta. Before you read further, please study carefully the plan of Dakshineswar temple in Figure 14.

Author(s): The Open University

1.8 Maintenance

Databases are one of the more enduring software engineering artefacts; it is not uncommon to find database implementations whose use can be traced back for 15 years or more. Consequently, maintenance of the database is a key issue.

Maintenance can take three main forms:

• Operational maintenance, where the performance of the database is monitored. If it falls below some acceptable standard, then reorganisation of the database, usuall
Author(s): The Open University

Acknowledgements

The content acknowledged below is Proprietary (see terms and conditions) and is used under licence.

## Unit Image

Cayusa

All other materials included in this unit are derived from content originated at the Open University.

Author(s): The Open University

3 Key skills assessment units

This section gives advice and guidance to help you compile and present a portfolio of selected work. You are strongly advised to read through this section so that you have an idea of what is expected.

The key skills assessment units provide an opportunity for you to integrate your development of key skills with your work or study. You may choose to concentrate on skills that you need to develop and improve for your job, for a new course, or personally to help you keep abreast of new dev
Author(s): The Open University

Learning outcomes

After studying this unit you will:

• have an understanding of the role of mentor in relation to supporting a student teacher in the early stages of becoming a teacher;

• recognise the skills of coaching, support and guidance required of the role;

• have considered the issues connected with the assessment of teacher competencies.

Author(s): The Open University

Introduction

The OU PGCE has been developed by The Open University and its partner schools to provide an innovative, student-teacher centred approach to initial teacher education. We aim to build on the skills, knowledge and experience that student teachers bring to the profession, and then to prepare them for a career in teaching. The course leads to the award of PGCE, and Qualified Teacher Status (QTS) conferred by the appropriate statutory body. Working with a Partner Schools Network, the OU PGCE provi
Author(s): The Open University

1.6.6 Professional bodies and societies

Consider joining a learned society or professional organisation. They can be very useful for conference bulletins as well as in-house publications, often included in the subscription. Don't forget to ask about student rates. Try looking for the websites of learned societies associated with your subject area (e.g. The Royal Society, the Institute of Electrical
Author(s): The Open University

1.5.5 Social bookmarks

If you find you have a long unmanageable list of favourites/bookmarks you might like to try social bookmarks as an alternative.

## Activity – what you need to know about social bookmarks

Author(s): The Open University

2.6 Summary of Section 2

Human language is a complex communication system that allows the generation of infinitely many different messages by combining the basic sounds (phonemes) into words, and combining the words into larger units called sentences. The way the sounds combine is governed by phonological rules, and the way the words combine is governed by syntactic rules.

Phonemes can be divided into the vowels, which are made by vibration of the vocal folds, and consonants, which are abrupt sounds made by bri
Author(s): The Open University

Here is a mixed bag of exercises, in case you feel that you need more practice. Do the exercises which you feel will help you.

Author(s): The Open University

3.5.1 Try some yourself

1 Give the appropriate rounding for each of the values below:

• (a) Carpet floor area = 26.456 sq metres

• (b) Interest earned = £109.876 5439

• (c) Bill for £84.90 shared by
Author(s): The Open University