Member of the e-learning unit in Newcastle University's School of Mathematics and Statistics.

Lead developer of Numbas.

I'm happy to answer any questions - email me.

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Christian Lawson-Perfect on Amount of substance needed to prepare a solution 9 years, 3 months ago

Saved a checkpoint:

The original question had gaps within steps - not supported any more!

I've rejigged it to just use normal steps. The display is a little bit worse. I need to come up with an "input box here" button for non-gapfill parts.

Christian Lawson-Perfect copied Bad question to Better question 9 years, 3 months ago

Christian Lawson-Perfect created Bad question 9 years, 3 months ago

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Christian Lawson-Perfect on Combining fractions 9 years, 4 months ago

Saved a checkpoint:

Added a marking script to make sure the student's answer is reduced.

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Christian Lawson-Perfect on Resolve forces into components 9 years, 4 months ago

Gave some feedback: Ready to use

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Christian Lawson-Perfect on Resolve forces into components 9 years, 4 months ago

Gave some feedback: Ready to use

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Christian Lawson-Perfect commented on Resolve forces into components 9 years, 4 months ago

Added adaptive marking, to cope with rounding errors.

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Christian Lawson-Perfect on Resolve force into $x$ and $y$ components - negative $x$ 9 years, 4 months ago

Gave some feedback: Ready to use