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When saving the data necessary to resume an attempt, Numbas only saves the values of variables which use the random number generator.

If you naively generate a large random sample in one variable, it'll be marked as a source of randomness so Numbas will save every value in the sample. Loading this value when you resume the attempt can be very slow.

Instead, you can generate a seed value in one variable and then use it with the seedrandom function in the variable that stores your random list. Only the value of the seed needs to be saved.

The diagram contains a line and a hidden glider on that line.

The JavaScript preamble adds a callback which shows the glider when the question advice is displayed.

Shows how to use the lpad function to format a time in HH:MM format so that leading zeros are used for numbers less than 10.

The CSS preamble adds a vertical line down the input for part b, to separate the two parts of the matrix.

A custom marking algorithm on the spreadsheet part changes it to interpret quantities in cells, so they can be compared to the expected answer.

In real use, you'd probably want more sophisticated logic, to give better feedback or to allow partial marks for different units, like the "quantity with units" part type does.

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This easy question is intended to be used by administrators to test the integration of Numbas with a learning environment.

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To be used for in-course assessment (Problem solving exercises 1) in MSP3801

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To be used for in-course assessment (Problem solving exercises 1) in MAS3801

Order of Operations

rebelmaths

Widget Sales

This question asks the student to give a function with a particular root. It then asks them to divide by (x-{root}), and uses adaptive marking to mark against the previous answer.

This uses the "expression" data type, which is currently undocumented and experimental.

Solve an ODE by first writing it in canonical form.

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This question asks you to place a point on a number line. The number is not an integer.

A revision quiz to prepare for LO3.

Rounding integers and decimals to a specific number of sig figs.

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Find the number of people with heights greater then mean plus two times the standard deviation.

A demonstration of the Shear and Bending Moment Extension

Explore mode question guiding you through the steps of the "I can name your polynomial" trick.

Shows two different ways