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
Grid List Results: 198 items
Blood and the respiratory system free course icon level 2: intermediate icon

Science, Maths & Technology

Blood and the respiratory system

‘Don’t hold your breath’ is an expression you’ve probably heard many times, but may not have thought too much about. In this free course, Blood and the respiratory system, you’ll study why respiration is so important for life, including how air enters and leaves the lungs, how oxygen is transported in the blood, the many dynamic factors that ...

Free course
10 hrs
The science of nutrition and healthy eating free course icon level 1: introductory icon Badge icon

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 ...

Free course
24 hrs
Mathemateg bob dydd 2 free course icon level 1: introductory icon

Science, Maths & Technology

Mathemateg bob dydd 2

Bydd y cwrs rhad ac am ddim hwn yn adeiladu ar eich sgiliau mathemateg presennol ac yn eich helpu i deimlo'n fwy hyderus wrth fynd i'r afael â'r fathemateg rydych chi'n dod ar ei draws mewn sefyllfaoedd bob dydd.

Free course
48 hrs
Mathemateg bob dydd 1 free course icon 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.

Free course
48 hrs
Scales in space and time free course icon level 1: introductory icon

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 ...

Free course
12 hrs
Understanding autism free course icon level 1: introductory icon Badge icon

Science, Maths & Technology

Understanding autism

Learn about autism, one of the most challenging long-term conditions of the century. This free course, Understanding autism, introduces the autism spectrum, how it is experienced by individuals and families, and why it has become a global concern. The course explains how understanding of the autism spectrum and approaches to diagnosis and care ...

Free course
24 hrs
Introducing mammals free course icon level 1: introductory icon

Nature & Environment

Introducing mammals

Mammals come in a bewildering variety of shapes and sizes, and yet all species have some characteristics in common. These similarities justify the inclusion of all such diverse types within the single taxonomic group (or class) called the Mammalia. This free course, Introducing mammals, offers a starting point for the study of mammals. It will ...

Free course
5 hrs
Discovering chemistry free course icon level 1: introductory icon Badge icon

Science, Maths & Technology

Discovering chemistry

Chemistry lies at the centre of our modern life, playing a part in areas as diverse as the development of new drugs and materials, analysing our environment through to more mundane activities such as washing your clothes and making your tea. But to truly understand the role chemistry plays you need to have a sound grasp of a number of ...

Free course
24 hrs
Aquatic mammals free course icon level 1: introductory icon

Nature & Environment

Aquatic mammals

Mammals come in a bewildering variety of shapes and sizes and yet all of the 4700 or so species have some characteristics in common, which justifies the inclusion of diverse types within a single group. Although mammals evolved on land, a number of species have become adapted to spending part or all of their lives in water and it is these ...

Free course
5 hrs
Infection and immunity free course icon 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 ...

Free course
12 hrs
Can renewable energy sources power the world? free course icon level 1: introductory icon Badge icon

Science, Maths & Technology

Can renewable energy sources power the world?

We ask the question ‘Can renewable energy sources power the world?’ as a response to the growing awareness that increased use of renewable energy technologies is making a major contribution to global efforts to limit anthropogenic climate change. The course begins by examining the environmental concerns that have caused a rise in interest in ...

Free course
24 hrs
Astudio’r gwyddorau naturiol yn ddwyieithog free course icon level 1: introductory icon

Science, Maths & Technology

Astudio’r gwyddorau naturiol yn ddwyieithog

Meddwl am astudio cwrs yn y Gwyddorau Naturiol? Ystyried astudio trwy’r Gymraeg ac eisiau gwybod beth yw’r manteision? Dim yn siŵr os ydy eich Cymraeg yn ddigon da? Os ydych chi’n darllen yr erthygl hon, digon tebyg fod y cwestiynau hyn wedi codi yn eich meddwl. Pwrpas yr erthygl hon yw ateb y cwestiynau hyn, a dangos sut gallai astudio’r ...

Free course
1 hr