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  • Mark the product of two matrices in a mathematical expression part

    A mathematical expression part whose answer is the product of two matrices, $X \times Y$.

    By setting the "variable value generator" option for $X$ and $Y$ to produce random matrices, we can ensure that the order of the factors in the student's answer matters: $X \times Y \neq Y \times X$.

    Question Draft

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    Last modified 24/09/2019 15:27

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  • Ask for significand and exponent of a number in scientific notation separately

    by Picture of Christian Lawson-Perfect Christian Lawson-Perfect and 1 other

    This question shows how to ask for a number in scientific notation, by asking for the significand and exponent separately and using a custom marking algorithm in the gap-fill part to put the two pieces together.

    Answers not in standard form, i.e. with a significand not in $[1,10)$, are accepted but given partial marks.

    Question Draft

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    Last modified 13/08/2019 20:21

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  • Only mark a gap depending on the answer to a previous gap.

    by Picture of Christian Lawson-Perfect Christian Lawson-Perfect and 1 other

    Student is asked whether a quadratic equation can be factorised. If they say "yes", they're asked to give the factorisation.

    Question Should not be used

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    Last modified 13/08/2019 11:54

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  • Pattern matching - factorise an equation

    by Picture of Christian Lawson-Perfect Christian Lawson-Perfect and 1 other

    The student is asked to factorise a quadratic $x^2 + ax + b$. A custom marking script uses pattern matching to ensure that the student's answer is of the form $(x+a)(x+b)$, $(x+a)^2$, or $x(x+a)$.

    To find the script, look in the Scripts tab of part a.

    Question Ready to use

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    Last modified 13/08/2019 11:53

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  • Use student input in a JSXGraph diagram

    by Picture of Christian Lawson-Perfect Christian Lawson-Perfect and 1 other

    There are copious comments in the definition of the function eqnline about the voodoo needed to have a JSXGraph diagram interact with the input box for a part.

    Question Has some problems

    CC BY Published

    Last modified 23/07/2019 14:12

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  • Displaying surd fractions

    Shows how to use the sqrtSquare simplification rule to display a randomly-chosen fraction involving surds on either the top or bottom.

    Question Draft

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    Last modified 26/06/2019 11:04

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  • LaTeX inside a randomised string

    Shows how to safely include LaTeX in a string variable.

    Question Draft

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    Last modified 20/05/2019 09:06

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  • Expand a product of three binomials in $x$

    The student must expand an expression of the form $(x+a)(x+b)(x+c)$. A pattern restriction ensures there are no brackets in their answer.

    Question Draft

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    Last modified 20/05/2019 08:24

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  • Use canvas to draw a rectangle

    The custom function rectangle(width,height) draws a rectangle with the given dimensions, along with some labels.

    Question Should not be used

    CC BY Published

    Last modified 05/05/2019 15:46

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  • Student must pick all correct choices, and gets nothing otherwise

    A "match choices with answers" part where the student either gets all the marks or none. Any incorrect choice is penalised with a huge negative mark, so they end up with the minimum mark of 0.

    Question Draft

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    Last modified 04/09/2018 10:27

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