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Discovering mathematics

This module provides a gentle start to the study of mathematics. It helps you integrate mathematical ideas into everyday thinking and builds confidence in using and learning mathematics. It covers statistical, graphical, algebraic, trigonometric and numerical concepts and techniques and introduces mathematical modelling. You’ll learn skills required to study further mathematics or to successfully study many other subjects, such as business, computing, economics, education, humanities, science, social science and technology.

Modules count towards OU qualifications

OU qualifications are modular in structure; the credits from this undergraduate module could count towards a certificate of higher education, diploma of higher education, foundation degree or honours degree.

Browse qualifications in related subjects

Module

Module code

MU123

Credits

Credits

  • Credits measure the student workload required for the successful completion of a module or qualification.
  • One credit represents about 10 hours of study over the duration of the course.
  • You are awarded credits after you have successfully completed a module.
  • For example, if you study a 60-credit module and successfully pass it, you will be awarded 60 credits.
30

Study level

Across the UK, there are two parallel frameworks for higher education qualifications, the Framework for Higher Education Qualifications in England, Northern Ireland and Wales (FHEQ) and the Scottish Credit and Qualifications Framework (SCQF). These define a hierarchy of levels and describe the achievement expected at each level. The information provided shows how OU module levels correspond to these frameworks.
Level of Study
OU SCQF FHEQ
1 7 4

Study method

Distance Learning

Module cost

See Module registration

Entry requirements

See Entry requirements

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Module details Entry requirements Module registration Study materials

What you will study

In order to study this module successfully you should expect to be actively doing mathematics, rather than just reading it. You will also be encouraged to develop skills in interpreting and explaining mathematics, and this aspect will be assessed in some of the assignment questions.

Providing you have the appropriate background knowledge, you should expect to study for about eight hours a week. Many of the topics covered in the module depend on your understanding of topics in earlier units. So, if you have not fully understood earlier material, you may find later material more difficult and time consuming. This is particularly true of graphs, formulas and algebra. Naturally, the study time required for the module tends to increase before an assignment deadline.

You can find the full content list on the Open mathematics and statistics website.

You will learn

Successful study of this module should begin to develop your skills in working with mathematical concepts and using them to solve problems.

You will learn about:

  • key ideas in mathematics, including some statistics, algebra, geometry and trigonometry
  • mathematical vocabulary and notation introduced and developed in the module
  • selection and use of mathematical techniques for solving problems
  • interpretation of results in the context of real life situations
  • simple mathematical arguments
  • how to explain mathematical ideas from the module in writing
  • development of skills in learning mathematics
  • use of relevant ICT tools for learning and for working on mathematical problems
  • describing problems mathematically
  • analysing mathematical reasoning.

The module contains many real world contexts such as journey planning, glaciers, supply and demand, depreciation, poverty levels, chance events, and medical conditions (such as cancer), to help illustrate mathematical topics.

Professional recognition

This module is often accepted as an equivalent qualification to GCSE grade 4 in mathematics by teacher training institutions, but always at the discretion of each institution. So, if you hope to use it for this purpose, you are advised to check as early as possible with your chosen teacher training institution(s).

Teaching and assessment

Support from your tutor

You’ll get help and support from an assigned tutor throughout your module.

They’ll help by:

  • marking your assignments and offering detailed feedback to help you improve
  • providing individual guidance, whether that’s for general study skills or specific module content
  • guiding you to additional learning resources
  • facilitating online discussions between your fellow students in the dedicated module and tutor group forums.

Online tutorials run throughout the module. Where possible, we’ll make recordings available. While they’re not compulsory, we strongly encourage you to participate.

Assessment

The assessment details for this module can be found in the facts box.

The first interactive computer-marked assignment (iCMA), covering Unit 1, is to be submitted about two weeks after the start of the module. The first TMA is to be submitted about a month after the start.

TMA questions typically involve calculating, creating and/or interpreting a graph or diagram, using algebra, and explaining your work and conclusions. The latter is one factor that makes this a university-level module and it is a new approach for some students, who may find it challenging initially. Some TMAs may also include a short question covering a wider aspect of studying maths.

As there is no examination, the end-of-module assessment (EMA) aims to consolidate your learning across different aspects of the module. It covers the whole of the module, and is compulsory if you wish to pass the module.

Future availability

Discovering mathematics (MU123) starts twice a year – in January/February and October.

This page describes the module that will start in October 2025 and February 2026.

We expect it to start for the last time in February 2030.

Regulations

As a student of The Open University, you should be aware of the content of the academic regulations which are available on our Student Policies and Regulations website.

Course work includes:

4 Tutor-marked assignments (TMAs)
5 Interactive computer-marked assignments (iCMAs)
End-of-module assessment


Entry requirements

There is no formal pre-requisite study.

You can check you’re ready for MU123 and see the topics it covers here.

You can find out which module is your best starting point in mathematics here.

Talk to an advisor if you’re not sure you’re ready.

Preparatory work

You should aim to be confident and fluent with the concepts covered in the Are you ready? quiz here, and follow the advice in the quiz.

Register

Start End England fee Register
04 Oct 2025 Jun 2026 £1946.00

Registration closes 11/09/25 (places subject to availability)

Register
31 Jan 2026 Sep 2026 £1946.00

Registration closes 08/01/26 (places subject to availability)

Register
This module is expected to start for the last time in February 2030.

Additional Costs

Study costs

There may be extra costs on top of the tuition fee, such as set books, a computer and internet access.

If your income is not more than £25,000 or you receive a qualifying benefit, you might be eligible for help with some of these costs after your module has started.

Ways to pay for this module

Open University Student Budget Account

The Open University Student Budget Accounts Ltd (OUSBA) offers a convenient 'pay as you go' option to pay your OU fees, which is a secure, quick and easy way to pay. Please note that The Open University works exclusively with OUSBA and is not able to offer you credit facilities from any other provider. All credit is subject to status and proof that you can afford the repayments.

You pay the OU through OUSBA in one of the following ways:

  • Register now, pay later – OUSBA pays your module fee direct to the OU. You then repay OUSBA interest-free and in full just before your module starts. 0% APR representative. This option could give you the extra time you may need to secure the funding to repay OUSBA.
  • Pay by instalments – OUSBA calculates your monthly fee and number of instalments based on the cost of the module you are studying. APR 5.1% representative.

Joint loan applications

If you feel you would be unable to obtain an OUSBA loan on your own due to credit history or affordability issues, OUSBA offers the option to apply for a joint loan application with a third party. For example, your husband, wife, partner, parent, sibling or friend. In such cases, OUSBA will be required to carry out additional affordability checks separately and/or collectively for both joint applicants who will be jointly and severally liable for loan repayments.

As additional affordability checks are required when processing joint loan applications, unfortunately, an instant decision cannot be given. On average the processing time for a joint loan application is five working days from receipt of the required documentation.

Read more about Open University Student Budget Accounts (OUSBA).

Employer sponsorship

Studying with The Open University can boost your employability. OU courses are recognised and respected by employers for their excellence and the commitment they take to complete. They also value the skills that students learn and can apply in the workplace.

Over 30,000 employers have used the OU to develop staff so far. If the module you’ve chosen is geared towards your job or developing your career, you could approach your employer to see if they will sponsor you by paying some or all of the fees. 

  • Your employer just needs to complete a simple form to confirm how much they will be paying and we will invoice them.
  • You won’t need to get your employer to complete the form until after you’ve chosen your module.  

Credit/debit card

You can pay part or all of your tuition fees upfront with a debit or credit card when you register for each module. 

We accept American Express, Mastercard, Visa and Visa Electron. 

Mixed payments

We know that sometimes you may want to combine payment options. For example, you may wish to pay part of your tuition fee with a debit card and pay the remainder in instalments through an Open University Student Budget Account (OUSBA).


Please note: your permanent address/domicile will affect your fee status and, therefore, the fees you are charged and any financial support available to you. The fee information provided here is valid for modules starting before 31 July 2026. Fees typically increase annually. For further information about the University's fee policy, visit our Fee Rules.

This information was provided on 25/04/2025.

Can you study an Access module for free?

Depending on eligibility and availability of places, you could apply to study your Access module for free.

To qualify, you must:

  1. be resident in England
  2. have a household income of not more than £25,000 (or be in receipt of a qualifying benefit)
  3. have not completed one year or more on any full-time undergraduate programme at FHEQ level 4 or above or successfully completed 30 credits or more of OU study within the last 10 years

How to apply to study an Access module for free

Once you've started the registration process, either online or over the phone, we'll contact you about your payment options. This will include instructions on how you can apply to study for free if you are eligible and funded places are still available.

If you're unsure if you meet the criteria to study for free, you can check with one of our friendly advisers on +44 (0)300 303 0069, or you can request a call back.

Not eligible to study for free?

Don't worry! We offer a choice of flexible ways to help spread the cost of your Access module. The most popular options include:

  • monthly payments through OUSBA
  • part-time tuition fee loan (you'll need to be registered on a qualification for this option)

To explore all the options available to you, visit Fees and Funding.

What's included

You’ll have access to a module website, which includes:

  • a week-by-week study planner
  • course-specific module materials
  • audio and video content
  • relevant computer software and associate guidance
  • assessment details, instructions and guidance
  • online tutorial access
  • access to student and tutor group forums.

You’ll be provided with printed books covering the content of the module, including explanations, examples and activities to aid your understanding of the concepts and associated skills and techniques. In addition, you will have a printed Module Guide and Handbook.

You will need

A scientific calculator. We recommend any Casio scientific calculator with ’natural display’, as these enable you to key in calculations in the same order as they usually appear in written text, and have a two-line display so that you can see both your calculation and the answer. Some instructions for using the Casio fx-83ES, and compatible models, are provided in the study materials. Any other scientific calculator is also acceptable provided that you know how to use it before the module starts, and you have access to the appropriate calculator manual (these are often available to download from the manufacturer’s website). Please note that you do not need to have a graphics or programmable calculator to study this module.

(If you have studied Science, technology and maths Access module (Y033), you can use the calculator from that module providing you have access to the manual.)

Computing requirements

  • Primary device – A desktop or laptop computer. It’s possible to access some materials on a mobile phone, tablet or Chromebook; however, they will not be suitable as your primary device.
  • Peripheral device – Headphones/earphones with a built-in microphone for online tutorials.
  • Our OU Study app operates on supported versions of Android and iOS.
  • Operating systems – Windows 11 or latest supported macOS. Microsoft will no longer support Windows 10 as of 14 October 2025.
  • Internet access – Broadband or mobile connection.
  • Browser – Google Chrome and Microsoft Edge are recommended. Mozilla Firefox and Safari may be suitable.

If you have a disability

The OU strives to make all aspects of study accessible to everyone and this Accessibility Statement outlines what studying MU123 involves. You should use this information to inform your study preparations and any discussions with us about how we can meet your needs.

To find out more about what kind of support and adjustments might be available, contact us or visit our disability support pages.