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
What chemical compounds might be present in drinking water?
Do you want to know what’s in the water that you drink? This free course, What chemical compounds might be present in drinking water?, examines the chemical compounds that occur in drinking water. A high level of certain anions in water can cause environmental pollution and health problems. Cations are also important. For example, calcium salts ...
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level 1: introductory icon
Science, Maths & Technology
Basic science: understanding experiments
This free course, Basic science: understanding experiments, introduces you to science-based skills through simple and exciting physics, chemistry and biology experiments.
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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
In the night sky: Orion
In this free course, In the night sky: Orion, you will explore the night sky, discover how stars formed and find out about exoplanets, all through the constellation of Orion.
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level 1: introductory icon
Science, Maths & Technology
Basic science: understanding numbers
This free course, Basic science: understanding numbers, explains how you can use numbers to describe the natural world and make sense of everything from atoms to oceans.
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level 1: introductory icon
Science, Maths & Technology
The science of nuclear energy
This free course, The science of nuclear energy, will delve into the science behind nuclear power and explain what happens inside a nuclear reactor and what it means for an element to be radioactive. It will explore some of the risks of producing nuclear power and examine the arguments for and against including it in future energy planning as ...
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level 1: introductory icon
Health, Sports & Psychology
Infection and immunity
In this free course, Infection and immunity, you will be introduced to infectious diseases and to the biological agents that invade our bodies and cause them: pathogens. You will also learn about the immune system, the human body’s vital defence against pathogens. Along the way you will learn about the scientific method and how it has helped ...
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level 3: advanced icon
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Science, Maths & Technology
Returning to STEM
This free badged course, Returning to STEM, offers useful skills and solutions to help you get back into a career in science, technology, engineering or mathematics (STEM).
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level 3: advanced icon
Science, Maths & Technology
Digital forensics
Digital evidence features in just about every part of our personal and business lives. Legal and business decisions hinge on having timely data about what people have actually done. This free course, Digital forensics, is an introduction to computer forensics and investigation, and provides a taster in understanding how to conduct investigations...
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level 2: intermediate icon
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Education & Development
The digital scholar
Digital scholarship is a shorthand for the intersection of three technology related developments: digital content, networked distribution and open practices. It is when digital, networked and open intersect that transformational practice occurs. In this free course, The digital scholar, you will explore the impact of digital technologies on ...
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level 3: advanced icon
Science, Maths & Technology
Information security
Information security underpins the commercial viability and profitability of enterprises of all sizes and the effectiveness of public sector organisations. This free course begins by explaining why information security and its management are important for any modern organisation and to every individual. You need to be familiar with an ...
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level 3: advanced icon
Science, Maths & Technology
Strategic planning: systems thinking in practice
Strategic planning: systems thinking in practice is a free course introducing core ideas of systems thinking in practice for managing and improving complex situations. The ideas correspond with three core activities of, firstly, understanding inter-relationships, secondly, engaging with multiple perspectives, and thirdly, reflecting on boundary ...