Free courses
Produced by The Open University, a world leader in open and distance learning, all OpenLearn courses are free to study. We offer nearly 1000 free courses across 9 different subject areas. Our courses are available to start right away.
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level 2: intermediate icon
Science, Maths & Technology
Introduction to linear equations and matrices
In this free course, matrices are used as a concise way of representing systems of linear equations which occur frequently in mathematics. Section 1 looks at simultaneous linear equations in two and three unknowns and then generalises the ideas to systems of linear equations. Section 2 develops a strategy for solving systems of linear equations....
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level 1: introductory icon
Science, Maths & Technology
Everyday maths 2 (Wales)
This free course, Everyday maths 2 (Wales), will build on your existing maths skills and help you to feel more confident tackling the maths you come across in everyday situations.
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level 1: introductory icon
Nature & Environment
Surviving the winter
In this free course, Surviving the winter, we study one aspect of the fluctuating nature of an organisms environment. We consider how organisms living in a temperate climate, such as that in Britain, are adapted to cope with winter. You will see that there is much diversity of adaptations among organisms, with different species coping with the ...
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level 1: introductory icon
Science, Maths & Technology
Studying natural sciences bilingually
Thinking of studying a Natural Sciences course? Considering studying through the medium of Welsh and want to know what the benefits are? Not sure whether your Welsh is good enough? If you’re reading this article, it’s quite possible you’ve thought about these questions. This article aims to answer these questions, and show how studying ...
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level 1: introductory icon
Science, Maths & Technology
Inheritance of characters
Genes are units of inheritance that contribute to a person's behaviour and health. In this free course, Inheritance of characters, you will learn what genes, DNA and chromosomes are and how they combine to make the human genome. You will also learn how the principles of inheritance work, the effect that our genetic make-up has on health, and how...
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level 1: introductory icon
Science, Maths & Technology
Prices, location and spread
The free course, Prices, location and spread, explores aspects of the question Are people getting better or worse off? It covers statistical measures characterising the location of a batch of data (the median and the mean), and looks further at weighted means and at the interquartile range as a measure of spread (variability). Boxplots and ...
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level 1: introductory icon
Science, Maths & Technology
Earthquakes
Earthquakes shake the ground surface, can cause buildings to collapse, disrupt transport and services, and can cause fires. They can trigger landslides and tsunami in short, earthquakes can be very destructive. In this free course, Earthquakes, you will look at why, where and what happens when they occur and also at how earthquakes are assessed...
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level 2: intermediate icon
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Education & Development
Teaching mathematics
This free course, Teaching mathematics, has been designed for non-specialist mathematics teachers of 8 to 14 year olds, teaching assistants, home schoolers and parents and draws on the established provision of mathematics education at the Open University. It can also be used as Continuing Professional Development by individuals or groups ...
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level 2: intermediate icon
Science, Maths & Technology
Modelling and estimation
This free course is concerned with modelling and estimation and looks in particular at the binomial distribution. Section 1 starts by defining probability, introduces relevant notation and briefly discusses basic properties of probabilities. The section concludes by considering some of the general features of and ideas about modelling discrete ...
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level 2: intermediate icon
Science, Maths & Technology
Minerals and the crystalline state
Rocks are made of minerals and, as minerals are natural crystals, the geological world is mostly a crystalline world. This free course, Minerals and the crystalline state, introduces the study of minerals and crystal structures, using online text and interactive activities, including questions and answers, video clips, slidecasts and a Digital Kit.
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level 1: introductory icon
Science, Maths & Technology
What are waves?
This free course, What are waves? explains what waves are. It describes different types of wave as well as their properties. You can listen to the song of a humpback whale and learn about the process of echolocation which is used by dolphins to locate their food. You will also conduct your own online research into how bats use echolocation to ...
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level 2: intermediate icon
Science, Maths & Technology
Geological processes in the British Isles
The landscape of the British Isles has undergone dramatic changes during the history of the Earth, from shallow sea to desert to the familiar terrain of the 21st century. In this free course, Geological processes in the British Isles, you will explore the processes that have shaped the British landscape over time, gaining insight into the ...