Numbas Users

1–30 of 698

Welcome to the Numbas Users Group.

This is a discussion/information forum for anyone who is using Numbas in any capacity; using the questions and exams in the public database, creating their own questions and exams or just finding out about Numbas.

The e-Learning Unit at Newcastle University will provide support wherever possible (subject to resource availability) to any users who have genuine educational uses for Numbas

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Julia Goedecke, … Christian Lawson-Perfect5

Jun 29

simplify not working properly with complex numbers

OK, I've sorted these out. The examples were very helpful, thanks Julia. The problem was that the

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simplify not working properly with complex numbers

OK, I've sorted these out. The examples were very helpful, thanks Julia. The problem was that the

Jun 29

merryn....@gmail.com, Christian Lawson-Perfect6

Jun 29

unexpected behaviour when precision restriction not set in marking settings

Thanks for taking the time to explain this Christian. That all makes perfect sense. On Tue, 28 Jun

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unexpected behaviour when precision restriction not set in marking settings

Thanks for taking the time to explain this Christian. That all makes perfect sense. On Tue, 28 Jun

Jun 29

Christian Lawson-Perfect

Jun 28

A few things: we're hiring; Numbas talks at EAMS 2022; Numbas training 18th July

HI all, I've got a few things to tell you about today. We really need to sort out the

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A few things: we're hiring; Numbas talks at EAMS 2022; Numbas training 18th July

HI all, I've got a few things to tell you about today. We really need to sort out the

Jun 28

Julia Goedecke, … Christian Lawson-Perfect4

Jun 16

recovering lost parts / advice from a downloaded question

Each downloaded package contains a file called source.exam, which contains the source code for the

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recovering lost parts / advice from a downloaded question

Each downloaded package contains a file called source.exam, which contains the source code for the

Jun 16

merryn....@gmail.com, Christian Lawson-Perfect4

Jun 7

using variable values in mathematical expression pattern restrictions

Hi Christian, Thank you for your solution - it works a treat! However, I have quickly run into

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using variable values in mathematical expression pattern restrictions

Hi Christian, Thank you for your solution - it works a treat! However, I have quickly run into

Jun 7

William Haynes, Christian Lawson-Perfect4

Jun 6

Sending a javascript command when a step is displayed.

OK, I think just having an event you can hook into is the right thing to do. I've added two

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Sending a javascript command when a step is displayed.

OK, I think just having an event you can hook into is the right thing to do. I've added two

Jun 6

Shrikant Kanitkar, Christian Lawson-Perfect2

Jun 6

Latest Version?

The most recent tagged version of the Numbas runtime is 6.2: https://www.numbas.org.uk/blog/2022/03/

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Latest Version?

The most recent tagged version of the Numbas runtime is 6.2: https://www.numbas.org.uk/blog/2022/03/

Jun 6

Christian Lawson-Perfect

Jun 6

One week until the E-Assessment in Mathematical Sciences conference, 2022

The international conference on E-Assessment in Mathematical Sciences is an academic conference

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One week until the E-Assessment in Mathematical Sciences conference, 2022

The international conference on E-Assessment in Mathematical Sciences is an academic conference

Jun 6

Martin Jones, Christian Lawson-Perfect4

May 26

Some questions about complex numbers

Don't get me started on the "choose several from a list" type! It's got loads of

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Some questions about complex numbers

Don't get me started on the "choose several from a list" type! It's got loads of

May 26

Martin Jones, … Don Shearman4

May 25

Graphs in multiple choice question

Thanks for pointing this out. I was indeed using the same graph in the advice section. On Wednesday,

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Graphs in multiple choice question

Thanks for pointing this out. I was indeed using the same graph in the advice section. On Wednesday,

May 25

Christian Lawson-Perfect

May 24

Fixed problem to be aware of with mathematical expression parts

Hi everyone, On March 31st I made a change to the 'rational' number type, to make it prefer

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Fixed problem to be aware of with mathematical expression parts

Hi everyone, On March 31st I made a change to the 'rational' number type, to make it prefer

May 24

Christian Lawson-Perfect, Tom Salyers2

May 24

Re: 500 server error - file permissions

Hi, Christian. Sorry for the delay--I was on holiday, then spent the next week getting caught up. The

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Re: 500 server error - file permissions

Hi, Christian. Sorry for the delay--I was on holiday, then spent the next week getting caught up. The

May 24

William Haynes, Christian Lawson-Perfect2

May 19

Bug with polynomial extension

Ah, it didn't account for the `rational` data type. I've added a line to make sure it

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Bug with polynomial extension

Ah, it didn't account for the `rational` data type. I've added a line to make sure it

May 19

Ben Brawn, Christian Lawson-Perfect3

May 19

Cannot read properties of undefined (reading 'getConstant')

This must have been broken for a couple of years at least, unless I'm missing something. Part a

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Cannot read properties of undefined (reading 'getConstant')

This must have been broken for a couple of years at least, unless I'm missing something. Part a

May 19

William Haynes, … Christian Lawson-Perfect4

May 16

Problem with display-only JME functions

Got it, thanks. Will On May 16, 2022, at 7:09 AM, Christian Lawson-Perfect <christianperfect@gmail

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Problem with display-only JME functions

Got it, thanks. Will On May 16, 2022, at 7:09 AM, Christian Lawson-Perfect <christianperfect@gmail

May 16

John Dickson, Christian Lawson-Perfect3

May 11

Pattern matching restrictions for a fraction

Hi, I've manage to get a solution to this, thanks! John On Wednesday, May 4, 2022 at 12:35:45 PM

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Pattern matching restrictions for a fraction

Hi, I've manage to get a solution to this, thanks! John On Wednesday, May 4, 2022 at 12:35:45 PM

May 11

Chris Jobling, … Christian Lawson-Perfect4

May 10

`is it possible to carry forward a student's wrong answer and use it as a variable for checking later parts that depend on that answer to avoid losing credits later?

As the others have said, adaptive marking does this. The documentation is at https://docs.numbas.org.

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`is it possible to carry forward a student's wrong answer and use it as a variable for checking later parts that depend on that answer to avoid losing credits later?

As the others have said, adaptive marking does this. The documentation is at https://docs.numbas.org.

May 10

Chris Jobling, Christian Lawson-Perfect5

May 9

Error in a live exam

Again, this is a mathematical expression part so there's no precision restriction. I worked out

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Error in a live exam

Again, this is a mathematical expression part so there's no precision restriction. I worked out

May 9

Chris Jobling, … Ben Brawn6

May 9

Has variable vRange been discontinued in question checking?

I think Numbas added vRange to the list of answers -- due to the bug that Christion mentioned in his

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Has variable vRange been discontinued in question checking?

I think Numbas added vRange to the list of answers -- due to the bug that Christion mentioned in his

May 9

William Haynes, Christian Lawson-Perfect3

May 5

Bug: Geogebra applet not restored correctly after a resume.

Christian, Thanks for finding and fixing this! My problems are working as expected now. Will On May 4

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Bug: Geogebra applet not restored correctly after a resume.

Christian, Thanks for finding and fixing this! My problems are working as expected now. Will On May 4

May 5

samuel...@gmail.com, Christian Lawson-Perfect3

May 4

Gap fill expected answer rounding

Hi Sam, Can you give me a link to this question, please? I've just tried making a number entry

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Gap fill expected answer rounding

Hi Sam, Can you give me a link to this question, please? I've just tried making a number entry

May 4

Julia Goedecke, … Christian Lawson-Perfect5

Apr 28

Variable automatically created which should be a recognised JME function

How odd! I did try removing in the original question but it kept coming back. Thanks! Julia On 28.04.

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Variable automatically created which should be a recognised JME function

How odd! I did try removing in the original question but it kept coming back. Thanks! Julia On 28.04.

Apr 28

Martin Jones, … Christian Lawson-Perfect6

Apr 28

Unpredictable conversion to scientific form

Thanks Martin, that helped me pin down what was happening. I've made a change that should make it

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Unpredictable conversion to scientific form

Thanks Martin, that helped me pin down what was happening. I've made a change that should make it

Apr 28

Wim Obbels, Christian Lawson-Perfect2

Apr 26

JME expression simplify for algebraic formulas

Factorising general polynomials would be lovely but would take a lot of hard work to do properly. It

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JME expression simplify for algebraic formulas

Factorising general polynomials would be lovely but would take a lot of hard work to do properly. It

Apr 26

Ben Brawn, Christian Lawson-Perfect3

Apr 26

When they say you can't break it

It turns out the source of the problem is that the code to display a fraction tries to reduce it to

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When they say you can't break it

It turns out the source of the problem is that the code to display a fraction tries to reduce it to

Apr 26

Jane Courtney, … Christian Lawson-Perfect3

Apr 26

ReferenceError: jmeDecimal is not defined

This was caused by a typo in the rewritten JME display code, which I've now fixed. On Mon, 25 Apr

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ReferenceError: jmeDecimal is not defined

This was caused by a typo in the rewritten JME display code, which I've now fixed. On Mon, 25 Apr

Apr 26

Christian Lawson-Perfect

Apr 21

Re: Institutional installation of Numbas editor

Running your own editor would allow you to change owners of questions and exams, yes. However, this

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Re: Institutional installation of Numbas editor

Running your own editor would allow you to change owners of questions and exams, yes. However, this

Apr 21

Catherine Bazela

Apr 7

Own installation of Numbas Editor?

Hi all, We were wondering if people could offer some insight into the benefits of an institutional

unread,

Own installation of Numbas Editor?

Hi all, We were wondering if people could offer some insight into the benefits of an institutional

Apr 7

Thomas Cottrell, Christian Lawson-Perfect3

Apr 7

Numbas LTI – can I safely change settings and upload a new version of an exam without affecting existing scores?

That's great, thanks! On Thursday, 7 April 2022 at 09:47:29 UTC+1 christia...@gmail.com wrote:

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Numbas LTI – can I safely change settings and upload a new version of an exam without affecting existing scores?

That's great, thanks! On Thursday, 7 April 2022 at 09:47:29 UTC+1 christia...@gmail.com wrote:

Apr 7

Martin Jones, Christian Lawson-Perfect2

Apr 6

Simplifying and not simplifying

Have you looked at the list of simplification rules? You can turn them on or off, to get just the

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Simplifying and not simplifying

Have you looked at the list of simplification rules? You can turn them on or off, to get just the

Apr 6

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