1 Introduction: a picture of emotion
What is emotion? This unit takes a philosophical approach to this question in an attempt to understand why people respond to events in a certain way. Is there a difference between an emotion and a bodily feeling or is one a consequence of the other?
Author(s): The Open University

6.1 Introduction
From diamonds to dynamite everything involves a chemical reaction. This unit introduces you to the concepts and principles that underpin chemistry at the molecular level. Everyday experiences are used to help you to understand the more complex issues.
Author(s): The Open University

4.1 Introduction
From diamonds to dynamite everything involves a chemical reaction. This unit introduces you to the concepts and principles that underpin chemistry at the molecular level. Everyday experiences are used to help you to understand the more complex issues.
Author(s): The Open University

3.1 Introduction
From diamonds to dynamite everything involves a chemical reaction. This unit introduces you to the concepts and principles that underpin chemistry at the molecular level. Everyday experiences are used to help you to understand the more complex issues.
Author(s): The Open University

1.1 Introduction
From diamonds to dynamite everything involves a chemical reaction. This unit introduces you to the concepts and principles that underpin chemistry at the molecular level. Everyday experiences are used to help you to understand the more complex issues.
Author(s): The Open University

6.1 Introduction
Your heart beats around 100,000 times every day and, in that time, pumps about 23,000 litres of blood around your body. But what happens when it doesn’t work as well as it should? This unit explains what happens in cardiovascular disease, when the heart’s performance is affected, how the normal function of blood vessels is impaired, and what treatments are available. Whether you are a patient, relative, friend or healthcare professional, you will find the unit interesting.
Author(s): The Open University

4.1 Introduction
Your heart beats around 100,000 times every day and, in that time, pumps about 23,000 litres of blood around your body. But what happens when it doesn’t work as well as it should? This unit explains what happens in cardiovascular disease, when the heart’s performance is affected, how the normal function of blood vessels is impaired, and what treatments are available. Whether you are a patient, relative, friend or healthcare professional, you will find the unit interesting.
Author(s): The Open University

1.1 A simple introduction
Your heart beats around 100,000 times every day and, in that time, pumps about 23,000 litres of blood around your body. But what happens when it doesn’t work as well as it should? This unit explains what happens in cardiovascular disease, when the heart’s performance is affected, how the normal function of blood vessels is impaired, and what treatments are available. Whether you are a patient, relative, friend or healthcare professional, you will find the unit interesting.
Author(s): The Open University

4.1 Introduction to minerals and why we need them
Both vitamins and minerals are essential in the diet in small quantities.The term ‘vitamin’ was not coined until early in the 20th century, to describe those chemicals in food without which a pattern of deficiency symptoms (often called a deficiency syndrome) occurs. Minerals, also called mineral elements, are those elements other than carbon, hydrogen, oxygen and nitrogen that are found in the body. This unit looks at the two main groups of vitamins: the fat-soluble vitamins A, D, E and K,
Author(s): The Open University

1.1 Introduction to vitamins and why we need them
Both vitamins and minerals are essential in the diet in small quantities.The term ‘vitamin’ was not coined until early in the 20th century, to describe those chemicals in food without which a pattern of deficiency symptoms (often called a deficiency syndrome) occurs. Minerals, also called mineral elements, are those elements other than carbon, hydrogen, oxygen and nitrogen that are found in the body. This unit looks at the two main groups of vitamins: the fat-soluble vitamins A, D, E and K,
Author(s): The Open University

8.1 Introduction
Graphs are a common way of presenting information. However, like any other type of representation, graphs rely on shared understandings of symbols and styles to convey meaning. Also, graphs are normally drawn specifically with the intention of presenting information in a particularly favourable or unfavourable light, to convince you of an argument or to influence your decisions.
Author(s): The Open University

6.1 Introduction
Graphs are a common way of presenting information. However, like any other type of representation, graphs rely on shared understandings of symbols and styles to convey meaning. Also, graphs are normally drawn specifically with the intention of presenting information in a particularly favourable or unfavourable light, to convince you of an argument or to influence your decisions.
Author(s): The Open University

4.1 Introduction
Graphs are a common way of presenting information. However, like any other type of representation, graphs rely on shared understandings of symbols and styles to convey meaning. Also, graphs are normally drawn specifically with the intention of presenting information in a particularly favourable or unfavourable light, to convince you of an argument or to influence your decisions.
Author(s): The Open University

3.1 Introduction
Graphs are a common way of presenting information. However, like any other type of representation, graphs rely on shared understandings of symbols and styles to convey meaning. Also, graphs are normally drawn specifically with the intention of presenting information in a particularly favourable or unfavourable light, to convince you of an argument or to influence your decisions.
Author(s): The Open University

3.1 Introduction

I wonder if you experience complexity in your daily life? For much of the time I struggle to keep my head above water as I try to understand and manage the complexity I experience as part of everyday life. I find social commentator and cartoonist Michael Leunig's depiction of a solitary figure looking through an ‘understandascope’ (Figure 2) a particularly skilled way of capturing the sense of bewilderment I someti
Author(s): No creator set

8.1 Introduction
Microelectronics has enabled designers of integrated circuits to exercise complete control over the electrical characteristics of each component they create. This unit will illustrate how such control is achieved and the various methods that can be applied in differing circumstances.
Author(s): The Open University

7.1 Introduction
Microelectronics has enabled designers of integrated circuits to exercise complete control over the electrical characteristics of each component they create. This unit will illustrate how such control is achieved and the various methods that can be applied in differing circumstances.
Author(s): The Open University

3.1 Introduction
Microelectronics has enabled designers of integrated circuits to exercise complete control over the electrical characteristics of each component they create. This unit will illustrate how such control is achieved and the various methods that can be applied in differing circumstances.
Author(s): The Open University

2.1 Introduction
Microelectronics has enabled designers of integrated circuits to exercise complete control over the electrical characteristics of each component they create. This unit will illustrate how such control is achieved and the various methods that can be applied in differing circumstances.
Author(s): The Open University

5.1 Introduction

One of the most difficult aspects of planning a project is estimating how long it will take to complete each key stage. An estimate might be based on:

• the size of the tasks and the effort required to complete them;

• the number of days that are not available for working on the project;

• historical data from other projects, including the experience of colleagues.

Where a project has a fixed end-date (for
Author(s): No creator set