There are twelve study units in this module.
In the first unit, you’ll revise and consolidate the mathematics taught in Essential mathematics 1 (MST124).
In the remaining study units, you’ll cover the following topics.
You’ll learn how to typeset mathematics with a choice of typesetting software.
You’ll work mainly from the module books, which are available in electronic formats as well as in print. You can view some of the worked examples in the books in an alternative video format, in which tutors work through and discuss the examples. You’ll use specially designed software applications to help you understand the concepts taught, and the same mathematics computer package used in Essential mathematics 1 (MST124). There are many online interactive practice questions to help you consolidate your learning.
The full content list is on the Open mathematics and statistics website.
In Essential mathematics 2 (MST125), you’ll further develop your mathematical skills and begin to develop new ones:
The practical skills are important for any job that uses mathematics. In addition, you’ll develop the following skills:
You’ll get help and support from an assigned tutor throughout your module.
They’ll help by:
Online tutorials run throughout the module. While they’re not compulsory, we strongly encourage you to participate. Where possible, we’ll make recordings available.
Course work includes:
This module includes a remote exam you'll take at home or another suitable location. The exam will be invigilated online by ProctorU, a service based outside the UK and with whom you must agree to additional Terms of Service. Find out more about online invigilation.
You’ll have access to a module website, which includes:
Additionally, the website includes:
We also provide physical:
You can study this module on its own or use the credits you gain towards an Open University qualification.
MST125 is a compulsory module in our:
MST125 is an option module in our:
Essential mathematics 2 (MST125) starts twice a year – in October and January/February.
It will next start in October 2026 and January 2027.
We expect it to start for the last time in October 2029.
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.
You must have passed, or currently be studying, one of the following modules:
Or be able to provide evidence you have the required mathematical skills.
You can check you’re ready for MST125 and see the topics it covers here.
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.
The key topics to revise include:
Essential mathematics 1 (MST124) is ideal preparation.
The OU strives to make all aspects of study accessible to everyone, and this Accessibility Statement outlines what studying MST125 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 website.
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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.
There may be extra costs on top of the tuition fee, such as set books, a computer and internet access.
If your personal income is £25,000 or less, or you’re on certain benefits, you could qualify for a grant and OU top-up funding to cover 100% of your course fees. Apply online at the same time as you register on your module.
For more information on how to apply, visit our Part-Time Fee Grants for students in Scotland page.
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Read more about Open University Student Budget Accounts (OUSBA).
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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.
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We accept American Express, Mastercard, Visa and Visa Electron.
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).
We know that sometimes you may want to combine payment options. For example, you may get support from your employer to pay part of your tuition fee and pay the remainder by credit or debit card.
For more information about combining payment options, contact an adviser.
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.
