## 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
Results: 221 items
free course icon level 1: introductory icon

Science, Maths & Technology

### Design thinking

Are you ever frustrated with something that you thought you could design better? This free course, Design thinking, will show you how to structure your natural creativity to come up with solutions to all kinds of problems, and have fun in the process too!

Free course
10 hrs
free course icon level 1: introductory icon

Science, Maths & Technology

### Exploring data: Graphs and numerical summaries

This free course, Exploring data: graphs and numerical summaries, will introduce you to a number of ways of representing data graphically and of summarising data numerically. You will learn the uses for pie charts, bar charts, histograms and scatterplots. You will also be introduced to various ways of summarising data and methods for assessing ...

Free course
20 hrs
free course icon level 2: intermediate icon

Science, Maths & Technology

### Interpreting data: Boxplots and tables

This free course, Interpreting data: Boxplots and tables, is concerned with two main topics. In Section 1, you will learn about another kind of graphical display, the boxplot. A boxplot is a fairly simple graphic, which displays certain summary statistics of a set of data. Boxplots are particularly useful for assessing quickly the location, ...

Free course
16 hrs
free course icon level 3: advanced icon

Science, Maths & Technology

### An introduction to complex numbers

In this free course, An introduction to complex numbers, you will learn how complex numbers are defined, examine their geometric representation and then move on to looking at the methods for finding the nth roots of complex numbers and the solutions to simple polynominal equations.

Free course
16 hrs
free course icon 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.

Free course
20 hrs
free course icon level 2: intermediate icon

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 ...

Free course
9 hrs
free course icon level 3: advanced icon

Science, Maths & Technology

### Working on your own mathematics

This free course, Working on your own mathematics, focuses on your initial encounters with research. It invites you to think about how perceptions of mathematics have influenced you in your prior learning, your teaching and the attitudes of learners.

Free course
4 hrs
free course icon level 1: introductory icon

Science, Maths & Technology

### Rounding and estimation

Scientific calculators are a wonderful invention, but they're only as good as the people who use them. If you often get an unexpected or ridiculous result when you press the enter button, this free course, Rounding and estimation, is for you. Learn how to do a calculation correctly and get the right answer every time.

Free course
5 hrs
free course icon level 1: introductory icon

Science, Maths & Technology

### Squares, roots and powers

From paving your patio to measuring the ingredients for your latest recipe, squares, roots and powers really are part of everyday life. This free course reviews the basics of all three and also describes scientific notation, which is a convenient way of writing or displaying large numbers.

Free course
5 hrs
free course icon level 1: introductory icon

Science, Maths & Technology

### Diagrams, charts and graphs

Diagrams, charts and graphs are used by all sorts of people to express information in a visual way, whether it's in a report by a colleague or a plan from your interior designer. This free course will teach you how to interpret these tools and how to use them yourself to convey information more effectively.

Free course
5 hrs
free course icon level 1: introductory icon

Science, Maths & Technology

### Language, notation and formulas

Communication is as vital in mathematics as in any language. This free course, Language, notation and formulas, will help you to express yourself clearly when writing and speaking about mathematics. You will also learn how to answer questions in the manner that is expected by the examiner.

Free course
5 hrs
free course icon level 1: introductory icon

Science, Maths & Technology

### Geometry

Geometry is concerned with the various aspects of size, shape and space. In this free course you will explore the concepts of angles, shapes, symmetry, area and volume through interactive activities.

Free course
5 hrs