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.
- All topics
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level 1: introductory icon
Science, Maths & Technology
Manufacturing
How are designs turned into products? What resources, materials and methods are used and what set of activities goes under the heading of 'manufacturing'? This free course will introduce manufacturing as a system and will describe some of the many different ways of making products. We will illustrate how the required properties of the materials ...
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level 3: advanced icon
Science, Maths & Technology
Surfaces
Surfaces are a special class of topological spaces that crop up in many places in the world of mathematics. In this free course, you will learn to classify surfaces and will be introduced to such concepts as homeomorphism, orientability, the Euler characteristic and the classification theorem of compact surfaces.
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level 1: introductory icon
Science, Maths & Technology
Ratio, proportion and percentages
From politics to cookery, ratios, proportions and percentages are part of everyday life. This free course is designed to help you become more familiar with how figures can be manipulated, then you can check whether that discount really is as big as they claim!
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level 1: introductory icon
Science, Maths & Technology
Health and safety in the laboratory and field
Health, safety and risk assessment are of paramount importance both in the laboratory and the field. This free course, Health and safety in the laboratory and field, will help make you more aware of the hazards and risks involved wherever you undertake your research, as well as giving you an overview of the legal requirements attached to this ...
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level 1: introductory icon
Science, Maths & Technology
Data analysis: hypothesis testing
Making decisions about the world based on data requires a process that bridges the gap between unstructured data and the decision. Statistical hypothesis testing helps decision-making by formulating beliefs about the world, including people, organisations or other objects, and formally testing these beliefs. In this free course, you will ...
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level 1: introductory icon
Science, Maths & Technology
Data analysis: visualisations in Excel
Evidence comes in the form of qualitative or quantitative data about the world around you. It is not always obvious, however, how to structure, aggregate, analyse or interpret the data to help you make decisions. In this free course, you will look at how to use data to make decisions in a systematic way using Microsoft Excel. Microsoft Excel ...
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level 1: introductory icon
Science, Maths & Technology
Systems modelling
Maps and plans, architects and engineers, drawings, graphs and tables: all are models we use in everyday life. This free course, Systems modelling, will introduce you to the modelling process, enabling you to recognise that systems models may be used in different ways as part of a process for: improving understanding of a situation; identifying ...
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level 1: introductory icon
Science, Maths & Technology
Mathemateg bob dydd 1
Bydd y cwrs rhad ac am ddim hwn yn datblygu ac yn gwella eich sgiliau mathemateg hanfodol ar gyfer gwaith, astudio a bywyd bob dydd. Mae gan y cwrs bedair sesiwn, sy'n ymdrin â'r pynciau canlynol: rhifau, mesur, siapiau a gofod, a thrin data. Bydd digonedd o enghreifftiau i’ch helpu i symud ymlaen, ynghyd â chyfleoedd i ymarfer eich dealltwriaeth.
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level 3: advanced icon
Science, Maths & Technology
Mosquito resistance to insecticides
Learn about how allele frequency can change rapidly in a population in response to selective pressure by considering how evolutionary change can occur in insects that are exposed to insecticides. This free course, Mosquito resistance to insecticides, further demonstrates how traits that are advantageous in one environment can have effects that ...
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level 1: introductory icon
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Science, Maths & Technology
An introduction to exoplanets
This free course, An introduction to exoplanets, introduces our galaxy's population of planets, and some of their many surprises. It explains the methods used by astronomers to study exoplanets, and provides a general introduction to the methods of scientific inquiry. The course culminates in discussion of life elsewhere in our Galaxy.
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level 2: intermediate icon
Science, Maths & Technology
Astronomy: images of the Universe
Modern astronomy utilises a range of techniques across the electromagnetic spectrum that allow astronomers to measure the brightness, size and shape of astronomical objects, as well as their structure in many cases. This free course enables you to explore multiwavelength images of the Universe and make your own measurements of stars, nebulae and...
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level 2: intermediate icon
Science, Maths & Technology
Introduction to the calculus of variations
This free course concerns the calculus of variations. Section 1 introduces some key ingredients by solving a seemingly simple problem – finding the shortest distance between two points in a plane. The section also introduces the notions of a functional and of a stationary path. Section 2 describes basic problems that can be formulated in terms ...