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
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 ...
Science, Maths & Technology
Babylonian mathematics
This free course looks at Babylonian mathematics. You will learn how a series of discoveries has enabled historians to decipher stone tablets and study the various techniques the Babylonians used for problem-solving and teaching. The Babylonian problem-solving skills have been described as remarkable and scribes of the time received a training ...
Science, Maths & Technology
Egyptian mathematics
The Egyptians are known for being ahead of their time in comparison to some civilisations that came after them. This free course, Egyptian mathematics, looks at how the Egyptians solved mathematical problems in everyday life and the technology they used. An understanding of this area has only been possible following the translation of the ...
Nature & Environment
The frozen planet
This free course is a general introduction to the frozen planet, including the temperature in the polar regions; the energy from the Sun and the seasons; reading and understanding graphs and maps; and how the Arctic and Antarctic regions are defined.
Science, Maths & Technology
Galaxies, stars and planets
This free course, Galaxies, stars and planets, is a general introduction, including scale of the universe from the very large to the very small; orbits and gravity; the Solar System; the Sun and other stars; galaxies and the composition of astronomical objects.
Health, Sports & Psychology
The science of nutrition and healthy eating
This free course, The science of nutrition and healthy eating, looks at the science behind nutrition, covering aspects of biology, chemistry and physics as well as giving some insight into healthier eating. Reading food labels, choosing healthier foods, hydrating appropriately and understanding how we taste food will allow you to be more ...
Science, Maths & Technology
An introduction to design engineering
This free course, An introduction to design engineering, looks at the way in which engineers use ideas and approaches from the discipline of design thinking to inform their work. The complexity that people bring to design problems is introduced, along with some basic methods of dealing with such complexity.
Science, Maths & Technology
A tour of the cell
This free course, A tour of the cell, contains a blend of text and a multimedia interactive component to look at the uniformity and diversity within cells. Fundamental to understanding how cells 'work' is a knowledge of the subcellular components and how they are arranged. This is introduced through a series of in-text and self-assessment ...
Science, Maths & Technology
The database development life cycle
No idea how relational database systems are constructed? Did you know that they underpin the majority of the managed data storage in computer systems? This free course, The database development life cycle, has been designed to give you an overview of the developmental lifecycle for a database system, explaining the importance of data analysis ...
Science, Maths & Technology
Introducing engineering
Engineering encompasses a broad range of disciplines from design to manufacturing. This free course, Introducing engineering, introduces a number of key themes that explore how engineering is undertaken in our modern world. These themes include engineering design, rules that govern engineers, manufacturing for products and electricity ...
Science, Maths & Technology
Scales in space and time
Scale – dealing with the miniscule to the massive, over milliseconds to millennia – is central to all the sciences. In this free course, Scales in space and time, you’ll go to the absolute limits of what can be measured – all through a study of an oak tree! By studying it you will be introduced to concepts in physics, chemistry, biology and ...
Science, Maths & Technology
Metric spaces and continuity
This free course contains an introduction to metric spaces and continuity. The key idea is to use three particular properties of the Euclidean distance as the basis for defining what is meant by a general distance function, a metric. Section 1 introduces the idea of a metric space and shows how this concept allows us to generalise the notion of ...